53155538 has 8 divisors (see below), whose sum is σ = 79988988. Its totient is φ = 26492544.

The previous prime is 53155523. The next prime is 53155547. The reversal of 53155538 is 83555135.

53155538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40360609 + 12794929 = 6353^2 + 3577^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×53155538² = 5651022440138888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53155498 and 53155507.

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 3 ways as a sum of consecutive naturals, for example, 41831 + ... + 43082.

Almost surely, 2^53155538 is an apocalyptic number.

53155538 is a deficient number, since it is larger than the sum of its proper divisors (26833450).

53155538 is a wasteful number, since it uses less digits than its factorization.

53155538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85228.

The product of its digits is 45000, while the sum is 35.

The square root of 53155538 is about 7290.7844571075. The cubic root of 53155538 is about 375.9956663526.

The spelling of 53155538 in words is "fifty-three million, one hundred fifty-five thousand, five hundred thirty-eight".