53561506 has 8 divisors (see below), whose sum is σ = 80723664. Its totient is φ = 26653620.

The previous prime is 53561471. The next prime is 53561507. The reversal of 53561506 is 60516535.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (53561507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63040 + ... + 63883.

It is an arithmetic number, because the mean of its divisors is an integer number (10090458).

Almost surely, 2^53561506 is an apocalyptic number.

53561506 is a deficient number, since it is larger than the sum of its proper divisors (27162158).

53561506 is a wasteful number, since it uses less digits than its factorization.

53561506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127136.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 53561506 is about 7318.5726750508. The cubic root of 53561506 is about 376.9504446024.

It can be divided in two parts, 5356 and 1506, that multiplied together give a triangular number (8066136 = T₄₀₁₆).

The spelling of 53561506 in words is "fifty-three million, five hundred sixty-one thousand, five hundred six".