1055551302521 has 8 divisors (see below), whose sum is σ = 1063288858464. Its totient is φ = 1047814222240.

The previous prime is 1055551302503. The next prime is 1055551302523. The reversal of 1055551302521 is 1252031555501.

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

It is a cyclic number.

It is not a de Polignac number, because 1055551302521 - 2⁶ = 1055551302457 is a prime.

It is a super-2 number, since 2×1055551302521² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055551302523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5205566 + ... + 5404536.

It is an arithmetic number, because the mean of its divisors is an integer number (132911107308).

Almost surely, 2^{1055551302521} is an apocalyptic number.

It is an amenable number.

1055551302521 is a deficient number, since it is larger than the sum of its proper divisors (7737555943).

1055551302521 is a wasteful number, since it uses less digits than its factorization.

1055551302521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237831.

The product of its (nonzero) digits is 37500, while the sum is 35.

The spelling of 1055551302521 in words is "one trillion, fifty-five billion, five hundred fifty-one million, three hundred two thousand, five hundred twenty-one".