53291638 has 8 divisors (see below), whose sum is σ = 80474400. Its totient is φ = 26466840.

The previous prime is 53291633. The next prime is 53291639. The reversal of 53291638 is 83619235.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 53291597 and 53291606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53291633) 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, 89118 + ... + 89713.

It is an arithmetic number, because the mean of its divisors is an integer number (10059300).

Almost surely, 2^53291638 is an apocalyptic number.

53291638 is a deficient number, since it is larger than the sum of its proper divisors (27182762).

53291638 is a wasteful number, since it uses less digits than its factorization.

53291638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178982.

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

The square root of 53291638 is about 7300.1121909187. The cubic root of 53291638 is about 376.3162939517.

The spelling of 53291638 in words is "fifty-three million, two hundred ninety-one thousand, six hundred thirty-eight".