52661630 has 64 divisors (see below), whose sum is σ = 113218560. Its totient is φ = 17260800.

The previous prime is 52661603. The next prime is 52661639. The reversal of 52661630 is 3616625.

It is a junction number, because it is equal to n+sod(n) for n = 52661593 and 52661602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52661639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169175 + ... + 169485.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040).

Almost surely, 2^52661630 is an apocalyptic number.

52661630 is an abundant number, since it is smaller than the sum of its proper divisors (60556930).

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

52661630 is a wasteful number, since it uses less digits than its factorization.

52661630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 52661630 is about 7256.8333314194. The cubic root of 52661630 is about 374.8274880586.

The spelling of 52661630 in words is "fifty-two million, six hundred sixty-one thousand, six hundred thirty".