1350455021 has 4 divisors (see below), whose sum is σ = 1351537500. Its totient is φ = 1349372544.

The previous prime is 1350454997. The next prime is 1350455023. The reversal of 1350455021 is 1205540531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 745836100 + 604618921 = 27310^2 + 24589^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350455021 - 2⁶ = 1350454957 is a prime.

It is a super-2 number, since 2×1350455021² = 3647457527488220882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1350455023) 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, 539366 + ... + 541863.

It is an arithmetic number, because the mean of its divisors is an integer number (337884375).

Almost surely, 2^1350455021 is an apocalyptic number.

It is an amenable number.

1350455021 is a deficient number, since it is larger than the sum of its proper divisors (1082479).

1350455021 is a wasteful number, since it uses less digits than its factorization.

1350455021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082478.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1350455021 is about 36748.5376715863. The cubic root of 1350455021 is about 1105.3336068808. Note that the first 3 decimals are identical.

Adding to 1350455021 its reverse (1205540531), we get a palindrome (2555995552).

The spelling of 1350455021 in words is "one billion, three hundred fifty million, four hundred fifty-five thousand, twenty-one".