1055055521 has 8 divisors (see below), whose sum is σ = 1136581824. Its totient is φ = 973581840.

The previous prime is 1055055511. The next prime is 1055055539. The reversal of 1055055521 is 1255505501.

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 1055055521 - 2¹⁴ = 1055039137 is a prime.

It is a super-2 number, since 2×1055055521² = 2226284304785162882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055055511) 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, 35060 + ... + 57786.

It is an arithmetic number, because the mean of its divisors is an integer number (142072728).

Almost surely, 2^1055055521 is an apocalyptic number.

It is an amenable number.

1055055521 is a deficient number, since it is larger than the sum of its proper divisors (81526303).

1055055521 is a wasteful number, since it uses less digits than its factorization.

1055055521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26311.

The product of its (nonzero) digits is 6250, while the sum is 29.

The square root of 1055055521 is about 32481.6182016845. The cubic root of 1055055521 is about 1018.0249880324.

The spelling of 1055055521 in words is "one billion, fifty-five million, fifty-five thousand, five hundred twenty-one".