1156860552 has 64 divisors (see below), whose sum is σ = 2936767680. Its totient is φ = 379717632.

The previous prime is 1156860541. The next prime is 1156860553. The reversal of 1156860552 is 2550686511.

It is a self number, because there is not a number n which added to its sum of digits gives 1156860552.

It is not an unprimeable number, because it can be changed into a prime (1156860553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440748 + ... + 443364.

It is an arithmetic number, because the mean of its divisors is an integer number (45886995).

Almost surely, 2^1156860552 is an apocalyptic number.

1156860552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1156860552 is an abundant number, since it is smaller than the sum of its proper divisors (1779907128).

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

1156860552 is a wasteful number, since it uses less digits than its factorization.

1156860552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902 (or 2898 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The square root of 1156860552 is about 34012.6528221484. The cubic root of 1156860552 is about 1049.7688234825.

The spelling of 1156860552 in words is "one billion, one hundred fifty-six million, eight hundred sixty thousand, five hundred fifty-two".