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30052051 = 31969421
BaseRepresentation
bin111001010100…
…0111011010011
32002112210122221
41302220323103
530143131201
62552041511
7513303211
oct162507323
962483587
1030052051
1115a66607
12a093297
1362c28a3
143dc3cb1
1529894a1
hex1ca8ed3

30052051 has 4 divisors (see below), whose sum is σ = 31021504. Its totient is φ = 29082600.

The previous prime is 30052049. The next prime is 30052081. The reversal of 30052051 is 15025003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30052051 - 21 = 30052049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30052021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484680 + ... + 484741.

It is an arithmetic number, because the mean of its divisors is an integer number (7755376).

Almost surely, 230052051 is an apocalyptic number.

30052051 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30052051 is a deficient number, since it is larger than the sum of its proper divisors (969453).

30052051 is an equidigital number, since it uses as much as digits as its factorization.

30052051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969452.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 30052051 is about 5481.9751002718. The cubic root of 30052051 is about 310.9028518298.

Adding to 30052051 its reverse (15025003), we get a palindrome (45077054).

The spelling of 30052051 in words is "thirty million, fifty-two thousand, fifty-one".

Divisors: 1 31 969421 30052051