53903861 has 4 divisors (see below), whose sum is σ = 58804224. Its totient is φ = 49003500.

The previous prime is 53903831. The next prime is 53903873. The reversal of 53903861 is 16830935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53903861 - 2²² = 49709557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53903831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2450165 + ... + 2450186.

It is an arithmetic number, because the mean of its divisors is an integer number (14701056).

Almost surely, 2^53903861 is an apocalyptic number.

It is an amenable number.

53903861 is a deficient number, since it is larger than the sum of its proper divisors (4900363).

53903861 is a wasteful number, since it uses less digits than its factorization.

53903861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4900362.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 53903861 is about 7341.9248838435. The cubic root of 53903861 is about 377.7518714421.

The spelling of 53903861 in words is "fifty-three million, nine hundred three thousand, eight hundred sixty-one".