660522051 has 48 divisors (see below), whose sum is σ = 1122750720. Its totient is φ = 366402240.

The previous prime is 660522019. The next prime is 660522059. The reversal of 660522051 is 150225066.

660522051 is a `hidden beast` number, since 6 + 605 + 2 + 2 + 0 + 51 = 666.

660522051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 660522051 - 2⁵ = 660522019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660522059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 307441 + ... + 309581.

It is an arithmetic number, because the mean of its divisors is an integer number (23390640).

Almost surely, 2^660522051 is an apocalyptic number.

660522051 is a deficient number, since it is larger than the sum of its proper divisors (462228669).

660522051 is a wasteful number, since it uses less digits than its factorization.

660522051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296 (or 2293 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 660522051 is about 25700.6235527467. The cubic root of 660522051 is about 870.8882683557. Note that the first 3 decimals are identical.

The spelling of 660522051 in words is "six hundred sixty million, five hundred twenty-two thousand, fifty-one".