1351152520 has 32 divisors (see below), whose sum is σ = 3218923800. Its totient is φ = 508668928.

The previous prime is 1351152449. The next prime is 1351152541. The reversal of 1351152520 is 252511531.

It can be written as a sum of positive squares in 4 ways, for example, as 1261244196 + 89908324 = 35514^2 + 9482^2 .

It is a super-2 number, since 2×1351152520² = 3651226264604700800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992815 + ... + 994174.

Almost surely, 2^1351152520 is an apocalyptic number.

1351152520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1351152520 is an abundant number, since it is smaller than the sum of its proper divisors (1867771280).

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

1351152520 is a wasteful number, since it uses less digits than its factorization.

1351152520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987017 (or 1987013 counting only the distinct ones).

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

The square root of 1351152520 is about 36758.0266064434. The cubic root of 1351152520 is about 1105.5238727241.

The spelling of 1351152520 in words is "one billion, three hundred fifty-one million, one hundred fifty-two thousand, five hundred twenty".