1255557051 has 32 divisors (see below), whose sum is σ = 2218245120. Its totient is φ = 686264832.

The previous prime is 1255557029. The next prime is 1255557067. The reversal of 1255557051 is 1507555521.

1255557051 is a `hidden beast` number, since 1 + 2 + 55 + 557 + 0 + 51 = 666.

It is not a de Polignac number, because 1255557051 - 2⁶ = 1255556987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1255556997 and 1255557015.

It is not an unprimeable number, because it can be changed into a prime (1255557091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140070 + ... + 148763.

It is an arithmetic number, because the mean of its divisors is an integer number (69320160).

Almost surely, 2^1255557051 is an apocalyptic number.

1255557051 is a deficient number, since it is larger than the sum of its proper divisors (962688069).

1255557051 is a wasteful number, since it uses less digits than its factorization.

1255557051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288872 (or 288866 counting only the distinct ones).

The product of its (nonzero) digits is 43750, while the sum is 36.

The square root of 1255557051 is about 35433.8404777128. The cubic root of 1255557051 is about 1078.8112924315.

The spelling of 1255557051 in words is "one billion, two hundred fifty-five million, five hundred fifty-seven thousand, fifty-one".