53555279 has 4 divisors (see below), whose sum is σ = 53571984. Its totient is φ = 53538576.

The previous prime is 53555269. The next prime is 53555309. The reversal of 53555279 is 97255535.

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

It is a cyclic number.

It is not a de Polignac number, because 53555279 - 2⁸ = 53555023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53555269) 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, 1862 + ... + 10515.

It is an arithmetic number, because the mean of its divisors is an integer number (13392996).

Almost surely, 2^53555279 is an apocalyptic number.

53555279 is a deficient number, since it is larger than the sum of its proper divisors (16705).

53555279 is a wasteful number, since it uses less digits than its factorization.

53555279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16704.

The product of its digits is 236250, while the sum is 41.

The square root of 53555279 is about 7318.1472382018. The cubic root of 53555279 is about 376.9358360924.

The spelling of 53555279 in words is "fifty-three million, five hundred fifty-five thousand, two hundred seventy-nine".