53521774 has 4 divisors (see below), whose sum is σ = 80282664. Its totient is φ = 26760886.

The previous prime is 53521757. The next prime is 53521777. The reversal of 53521774 is 47712535.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53521777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13380442 + ... + 13380445.

It is an arithmetic number, because the mean of its divisors is an integer number (20070666).

Almost surely, 2^53521774 is an apocalyptic number.

53521774 is a deficient number, since it is larger than the sum of its proper divisors (26760890).

53521774 is a wasteful number, since it uses less digits than its factorization.

53521774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26760889.

The product of its digits is 29400, while the sum is 34.

The square root of 53521774 is about 7315.8577077469. The cubic root of 53521774 is about 376.8572140902.

The spelling of 53521774 in words is "fifty-three million, five hundred twenty-one thousand, seven hundred seventy-four".