1151253520 has 40 divisors (see below), whose sum is σ = 2749013784. Its totient is φ = 448054272.

The previous prime is 1151253503. The next prime is 1151253539. The reversal of 1151253520 is 253521511.

It can be written as a sum of positive squares in 4 ways, for example, as 615238416 + 536015104 = 24804^2 + 23152^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191509 + ... + 197428.

Almost surely, 2^1151253520 is an apocalyptic number.

1151253520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151253520 is an abundant number, since it is smaller than the sum of its proper divisors (1597760264).

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

1151253520 is a wasteful number, since it uses less digits than its factorization.

1151253520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388987 (or 388981 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1151253520 is about 33930.1270259927. The cubic root of 1151253520 is about 1048.0700815555.

The spelling of 1151253520 in words is "one billion, one hundred fifty-one million, two hundred fifty-three thousand, five hundred twenty".