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54907287 = 366127689
BaseRepresentation
bin1101000101110…
…1000110010111
310211022120122020
43101131012113
5103024013122
65240504223
71234463361
oct321350627
9124276566
1054907287
1128aa2726
121647b073
13b4b5c26
147413d31
154c48c5c
hex345d197

54907287 has 8 divisors (see below), whose sum is σ = 73323120. Its totient is φ = 36548160.

The previous prime is 54907267. The next prime is 54907301. The reversal of 54907287 is 78270945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54907287 - 28 = 54907031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54907267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11862 + ... + 15827.

It is an arithmetic number, because the mean of its divisors is an integer number (9165390).

Almost surely, 254907287 is an apocalyptic number.

54907287 is a deficient number, since it is larger than the sum of its proper divisors (18415833).

54907287 is a wasteful number, since it uses less digits than its factorization.

54907287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28353.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 54907287 is about 7409.9451414973. The cubic root of 54907287 is about 380.0814391473.

The spelling of 54907287 in words is "fifty-four million, nine hundred seven thousand, two hundred eighty-seven".

Divisors: 1 3 661 1983 27689 83067 18302429 54907287