53921386 has 4 divisors (see below), whose sum is σ = 80882082. Its totient is φ = 26960692.

The previous prime is 53921363. The next prime is 53921389. The reversal of 53921386 is 68312935.

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

It can be written as a sum of positive squares in only one way, i.e., 41538025 + 12383361 = 6445^2 + 3519^2 .

It is not an unprimeable number, because it can be changed into a prime (53921389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13480345 + ... + 13480348.

Almost surely, 2^53921386 is an apocalyptic number.

53921386 is a deficient number, since it is larger than the sum of its proper divisors (26960696).

53921386 is a wasteful number, since it uses less digits than its factorization.

53921386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26960695.

The product of its digits is 38880, while the sum is 37.

The square root of 53921386 is about 7343.1182749565. The cubic root of 53921386 is about 377.7928047143.

The spelling of 53921386 in words is "fifty-three million, nine hundred twenty-one thousand, three hundred eighty-six".