53427640 has 48 divisors (see below), whose sum is σ = 139843800. Its totient is φ = 18317376.

The previous prime is 53427631. The next prime is 53427641. The reversal of 53427640 is 4672435.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53427641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11670 + ... + 15589.

Almost surely, 2^53427640 is an apocalyptic number.

It is an amenable number.

53427640 is an abundant number, since it is smaller than the sum of its proper divisors (86416160).

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

53427640 is a wasteful number, since it uses less digits than its factorization.

53427640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27284 (or 27273 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 53427640 is about 7309.4213177241. The cubic root of 53427640 is about 376.6361458376.

The spelling of 53427640 in words is "fifty-three million, four hundred twenty-seven thousand, six hundred forty".