53240555 has 4 divisors (see below), whose sum is σ = 63888672. Its totient is φ = 42592440.

The previous prime is 53240543. The next prime is 53240587. The reversal of 53240555 is 55504235.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-53240555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5324051 + ... + 5324060.

It is an arithmetic number, because the mean of its divisors is an integer number (15972168).

Almost surely, 2^53240555 is an apocalyptic number.

53240555 is a deficient number, since it is larger than the sum of its proper divisors (10648117).

53240555 is a wasteful number, since it uses less digits than its factorization.

53240555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10648116.

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 53240555 is about 7296.6125702274. The cubic root of 53240555 is about 376.1960154773.

The spelling of 53240555 in words is "fifty-three million, two hundred forty thousand, five hundred fifty-five".