53150640 has 40 divisors (see below), whose sum is σ = 164767728. Its totient is φ = 14173440.

The previous prime is 53150639. The next prime is 53150651. The reversal of 53150640 is 4605135.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 53150640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110491 + ... + 110970.

Almost surely, 2^53150640 is an apocalyptic number.

It is an amenable number.

53150640 is an abundant number, since it is smaller than the sum of its proper divisors (111617088).

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

53150640 is a wasteful number, since it uses less digits than its factorization.

53150640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221477 (or 221471 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 53150640 is about 7290.4485458715. The cubic root of 53150640 is about 375.9841173312.

Adding to 53150640 its reverse (4605135), we get a palindrome (57755775).

The spelling of 53150640 in words is "fifty-three million, one hundred fifty thousand, six hundred forty".