1055121531 has 16 divisors (see below), whose sum is σ = 1420548864. Its totient is φ = 696586464.

The previous prime is 1055121491. The next prime is 1055121533. The reversal of 1055121531 is 1351215501.

It is not a de Polignac number, because 1055121531 - 2²⁶ = 988012667 is a prime.

It is a super-2 number, since 2×1055121531² = 2226562890359567922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055121533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134976 + ... + 142578.

It is an arithmetic number, because the mean of its divisors is an integer number (88784304).

Almost surely, 2^1055121531 is an apocalyptic number.

1055121531 is a deficient number, since it is larger than the sum of its proper divisors (365427333).

1055121531 is a wasteful number, since it uses less digits than its factorization.

1055121531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 1055121531 is about 32482.6342989604. The cubic root of 1055121531 is about 1018.0462186459.

The spelling of 1055121531 in words is "one billion, fifty-five million, one hundred twenty-one thousand, five hundred thirty-one".