53351555 has 4 divisors (see below), whose sum is σ = 64021872. Its totient is φ = 42681240.

The previous prime is 53351531. The next prime is 53351567. The reversal of 53351555 is 55515335.

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

It is not a de Polignac number, because 53351555 - 2²⁴ = 36574339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5335151 + ... + 5335160.

It is an arithmetic number, because the mean of its divisors is an integer number (16005468).

Almost surely, 2^53351555 is an apocalyptic number.

53351555 is a deficient number, since it is larger than the sum of its proper divisors (10670317).

53351555 is a wasteful number, since it uses less digits than its factorization.

53351555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10670316.

The product of its digits is 28125, while the sum is 32.

The square root of 53351555 is about 7304.2148790955. The cubic root of 53351555 is about 376.4572747834.

The spelling of 53351555 in words is "fifty-three million, three hundred fifty-one thousand, five hundred fifty-five".