53815139 has 8 divisors (see below), whose sum is σ = 62545920. Its totient is φ = 45345096.

The previous prime is 53815133. The next prime is 53815159. The reversal of 53815139 is 93151835.

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

It is a cyclic number.

It is not a de Polignac number, because 53815139 - 2¹⁶ = 53749603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53815099 and 53815108.

It is not an unprimeable number, because it can be changed into a prime (53815133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64739 + ... + 65564.

It is an arithmetic number, because the mean of its divisors is an integer number (7818240).

Almost surely, 2^53815139 is an apocalyptic number.

53815139 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

53815139 is a deficient number, since it is larger than the sum of its proper divisors (8730781).

53815139 is a wasteful number, since it uses less digits than its factorization.

53815139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130369.

The product of its digits is 16200, while the sum is 35.

The square root of 53815139 is about 7335.8802471142. The cubic root of 53815139 is about 377.5445065430.

The spelling of 53815139 in words is "fifty-three million, eight hundred fifteen thousand, one hundred thirty-nine".