55631455 has 16 divisors (see below), whose sum is σ = 72994464. Its totient is φ = 40366080.

The previous prime is 55631447. The next prime is 55631473. The reversal of 55631455 is 55413655.

It is not a de Polignac number, because 55631455 - 2³ = 55631447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55631455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30859 + ... + 32611.

It is an arithmetic number, because the mean of its divisors is an integer number (4562154).

Almost surely, 2^55631455 is an apocalyptic number.

55631455 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55631455 is a deficient number, since it is larger than the sum of its proper divisors (17363009).

55631455 is a wasteful number, since it uses less digits than its factorization.

55631455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346.

The product of its digits is 45000, while the sum is 34.

The square root of 55631455 is about 7458.6496767176. The cubic root of 55631455 is about 381.7451014619.

The spelling of 55631455 in words is "fifty-five million, six hundred thirty-one thousand, four hundred fifty-five".