53390537 has 8 divisors (see below), whose sum is σ = 55355400. Its totient is φ = 51433984.

The previous prime is 53390531. The next prime is 53390549. The reversal of 53390537 is 73509335.

It can be written as a sum of positive squares in 4 ways, for example, as 2468041 + 50922496 = 1571^2 + 7136^2 .

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 53390537 - 2⁶ = 53390473 is a prime.

It is a super-2 number, since 2×53390537² = 5701098882296738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53390497 and 53390506.

It is not an unprimeable number, because it can be changed into a prime (53390531) 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, 12953 + ... + 16569.

It is an arithmetic number, because the mean of its divisors is an integer number (6919425).

Almost surely, 2^53390537 is an apocalyptic number.

It is an amenable number.

53390537 is a deficient number, since it is larger than the sum of its proper divisors (1964863).

53390537 is a wasteful number, since it uses less digits than its factorization.

53390537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155.

The product of its (nonzero) digits is 42525, while the sum is 35.

The square root of 53390537 is about 7306.8828511206. The cubic root of 53390537 is about 376.5489402451.

The spelling of 53390537 in words is "fifty-three million, three hundred ninety thousand, five hundred thirty-seven".