53976509 has 2 divisors, whose sum is σ = 53976510. Its totient is φ = 53976508.

The previous prime is 53976467. The next prime is 53976551. The reversal of 53976509 is 90567935.

It is a balanced prime because it is at equal distance from previous prime (53976467) and next prime (53976551).

It can be written as a sum of positive squares in only one way, i.e., 45185284 + 8791225 = 6722^2 + 2965^2 .

It is a cyclic number.

It is not a de Polignac number, because 53976509 - 2²⁰ = 52927933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53976509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53976709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26988254 + 26988255.

It is an arithmetic number, because the mean of its divisors is an integer number (26988255).

Almost surely, 2^53976509 is an apocalyptic number.

It is an amenable number.

53976509 is a deficient number, since it is larger than the sum of its proper divisors (1).

53976509 is an equidigital number, since it uses as much as digits as its factorization.

53976509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 255150, while the sum is 44.

The square root of 53976509 is about 7346.8706943841. The cubic root of 53976509 is about 377.9214981201.

The spelling of 53976509 in words is "fifty-three million, nine hundred seventy-six thousand, five hundred nine".