55451087 has 4 divisors (see below), whose sum is σ = 55475376. Its totient is φ = 55426800.

The previous prime is 55451083. The next prime is 55451159. The reversal of 55451087 is 78015455.

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 55451087 - 2² = 55451083 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 (55451083) 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, 8318 + ... + 13419.

It is an arithmetic number, because the mean of its divisors is an integer number (13868844).

Almost surely, 2^55451087 is an apocalyptic number.

55451087 is a deficient number, since it is larger than the sum of its proper divisors (24289).

55451087 is a wasteful number, since it uses less digits than its factorization.

55451087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24288.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 55451087 is about 7446.5486636428. The cubic root of 55451087 is about 381.3320908242.

The spelling of 55451087 in words is "fifty-five million, four hundred fifty-one thousand, eighty-seven".