53902381 has 6 divisors (see below), whose sum is σ = 58367850. Its totient is φ = 49755888.

The previous prime is 53902379. The next prime is 53902399. The reversal of 53902381 is 18320935.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12100 + 53890281 = 110^2 + 7341^2 .

It is not a de Polignac number, because 53902381 - 2¹ = 53902379 is a prime.

It is a super-2 number, since 2×53902381² = 5810933354938322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53902181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159306 + ... + 159643.

It is an arithmetic number, because the mean of its divisors is an integer number (9727975).

Almost surely, 2^53902381 is an apocalyptic number.

It is an amenable number.

53902381 is a deficient number, since it is larger than the sum of its proper divisors (4465469).

53902381 is a wasteful number, since it uses less digits than its factorization.

53902381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318975 (or 318962 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 53902381 is about 7341.8240921449. The cubic root of 53902381 is about 377.7484141889.

The spelling of 53902381 in words is "fifty-three million, nine hundred two thousand, three hundred eighty-one".