53997901 has 4 divisors (see below), whose sum is σ = 54014812. Its totient is φ = 53980992.

The previous prime is 53997887. The next prime is 53997907. The reversal of 53997901 is 10979935.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9455625 + 44542276 = 3075^2 + 6674^2 .

It is a cyclic number.

It is not a de Polignac number, because 53997901 - 2⁷ = 53997773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53997907) 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, 2046 + ... + 10591.

It is an arithmetic number, because the mean of its divisors is an integer number (13503703).

Almost surely, 2^53997901 is an apocalyptic number.

It is an amenable number.

53997901 is a deficient number, since it is larger than the sum of its proper divisors (16911).

53997901 is a wasteful number, since it uses less digits than its factorization.

53997901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16910.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 53997901 is about 7348.3264081014. The cubic root of 53997901 is about 377.9714175452.

The spelling of 53997901 in words is "fifty-three million, nine hundred ninety-seven thousand, nine hundred one".