53172620 has 24 divisors (see below), whose sum is σ = 111921264. Its totient is φ = 21219776.

The previous prime is 53172599. The next prime is 53172653. The reversal of 53172620 is 2627135.

53172620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 53172620.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6494 + ... + 12186.

It is an arithmetic number, because the mean of its divisors is an integer number (4663386).

Almost surely, 2^53172620 is an apocalyptic number.

It is an amenable number.

53172620 is an abundant number, since it is smaller than the sum of its proper divisors (58748644).

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

53172620 is a wasteful number, since it uses less digits than its factorization.

53172620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6169 (or 6167 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 53172620 is about 7291.9558418849. The cubic root of 53172620 is about 376.0359385446.

Adding to 53172620 its reverse (2627135), we get a palindrome (55799755).

The spelling of 53172620 in words is "fifty-three million, one hundred seventy-two thousand, six hundred twenty".