53476640 has 144 divisors (see below), whose sum is σ = 155131200. Its totient is φ = 17321472.

The previous prime is 53476639. The next prime is 53476681. The reversal of 53476640 is 4667435.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 53476640.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148781 + ... + 149139.

It is an arithmetic number, because the mean of its divisors is an integer number (1077300).

Almost surely, 2^53476640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53476640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77565600).

53476640 is an abundant number, since it is smaller than the sum of its proper divisors (101654560).

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

53476640 is a wasteful number, since it uses less digits than its factorization.

53476640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 53476640 is about 7312.7723880892. The cubic root of 53476640 is about 376.7512518769.

The spelling of 53476640 in words is "fifty-three million, four hundred seventy-six thousand, six hundred forty".