1051520660 has 48 divisors (see below), whose sum is σ = 2260790784. Its totient is φ = 410635008.

The previous prime is 1051520653. The next prime is 1051520681. The reversal of 1051520660 is 660251501.

It is a super-2 number, since 2×1051520660² = 2211391396813671200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456632 + ... + 458928.

It is an arithmetic number, because the mean of its divisors is an integer number (47099808).

Almost surely, 2^1051520660 is an apocalyptic number.

1051520660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051520660 is an abundant number, since it is smaller than the sum of its proper divisors (1209270124).

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

1051520660 is a wasteful number, since it uses less digits than its factorization.

1051520660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840 (or 2838 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1051520660 is about 32427.1592958742. The cubic root of 1051520660 is about 1016.8867846719.

The spelling of 1051520660 in words is "one billion, fifty-one million, five hundred twenty thousand, six hundred sixty".