53103720 has 32 divisors (see below), whose sum is σ = 159311520. Its totient is φ = 14160960.

The previous prime is 53103709. The next prime is 53103737. The reversal of 53103720 is 2730135.

It is a happy number.

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, 221146 + ... + 221385.

It is an arithmetic number, because the mean of its divisors is an integer number (4978485).

Almost surely, 2^53103720 is an apocalyptic number.

It is an amenable number.

53103720 is an abundant number, since it is smaller than the sum of its proper divisors (106207800).

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

53103720 is a wasteful number, since it uses less digits than its factorization.

53103720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442545 (or 442541 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 53103720 is about 7287.2299263849. The cubic root of 53103720 is about 375.8734484325.

Adding to 53103720 its reverse (2730135), we get a palindrome (55833855).

The spelling of 53103720 in words is "fifty-three million, one hundred three thousand, seven hundred twenty".