1251162056 has 32 divisors (see below), whose sum is σ = 2541702240. Its totient is φ = 575086848.

The previous prime is 1251162053. The next prime is 1251162079. The reversal of 1251162056 is 6502611521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1251162053) 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, 101126 + ... + 112821.

It is an arithmetic number, because the mean of its divisors is an integer number (79428195).

Almost surely, 2^1251162056 is an apocalyptic number.

It is an amenable number.

1251162056 is an abundant number, since it is smaller than the sum of its proper divisors (1290540184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251162056 is a wasteful number, since it uses less digits than its factorization.

1251162056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214013 (or 214009 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1251162056 is about 35371.7691952212. The cubic root of 1251162056 is about 1077.5510514622.

Adding to 1251162056 its reverse (6502611521), we get a palindrome (7753773577).

The spelling of 1251162056 in words is "one billion, two hundred fifty-one million, one hundred sixty-two thousand, fifty-six".