53111556 has 36 divisors (see below), whose sum is σ = 138587904. Its totient is φ = 17132400.

The previous prime is 53111549. The next prime is 53111563. The reversal of 53111556 is 65511135.

It is an interprime number because it is at equal distance from previous prime (53111549) and next prime (53111563).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×53111556² = 5641674761482272, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 22680 + ... + 24911.

It is an arithmetic number, because the mean of its divisors is an integer number (3849664).

Almost surely, 2^53111556 is an apocalyptic number.

It is an amenable number.

53111556 is an abundant number, since it is smaller than the sum of its proper divisors (85476348).

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

53111556 is a wasteful number, since it uses less digits than its factorization.

53111556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47632 (or 47627 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 53111556 is about 7287.7675594108. The cubic root of 53111556 is about 375.8919355208.

The spelling of 53111556 in words is "fifty-three million, one hundred eleven thousand, five hundred fifty-six".