53401869 has 32 divisors (see below), whose sum is σ = 81388800. Its totient is φ = 34594560.

The previous prime is 53401861. The next prime is 53401891. The reversal of 53401869 is 96810435.

It is not a de Polignac number, because 53401869 - 2³ = 53401861 is a prime.

It is a super-2 number, since 2×53401869² = 5703519225386322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53401861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170457 + ... + 170769.

It is an arithmetic number, because the mean of its divisors is an integer number (2543400).

Almost surely, 2^53401869 is an apocalyptic number.

It is an amenable number.

53401869 is a deficient number, since it is larger than the sum of its proper divisors (27986931).

53401869 is a wasteful number, since it uses less digits than its factorization.

53401869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 53401869 is about 7307.6582432404. The cubic root of 53401869 is about 376.5755788654.

The spelling of 53401869 in words is "fifty-three million, four hundred one thousand, eight hundred sixty-nine".