55051407 has 12 divisors (see below), whose sum is σ = 82464200. Its totient is φ = 36700776.

The previous prime is 55051391. The next prime is 55051427. The reversal of 55051407 is 70415055.

It is not a de Polignac number, because 55051407 - 2⁴ = 55051391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55051427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113032 + ... + 113517.

Almost surely, 2^55051407 is an apocalyptic number.

55051407 is a deficient number, since it is larger than the sum of its proper divisors (27412793).

55051407 is an equidigital number, since it uses as much as digits as its factorization.

55051407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226564 (or 226552 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55051407 is about 7419.6635368459. The cubic root of 55051407 is about 380.4136930457.

The spelling of 55051407 in words is "fifty-five million, fifty-one thousand, four hundred seven".