55133407 has 8 divisors (see below), whose sum is σ = 65042432. Its totient is φ = 45732600.

The previous prime is 55133401. The next prime is 55133413. The reversal of 55133407 is 70433155.

It is an interprime number because it is at equal distance from previous prime (55133401) and next prime (55133413).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55133407 - 2⁷ = 55133279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55133401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126819 + ... + 127252.

It is an arithmetic number, because the mean of its divisors is an integer number (8130304).

Almost surely, 2^55133407 is an apocalyptic number.

55133407 is a deficient number, since it is larger than the sum of its proper divisors (9909025).

55133407 is a wasteful number, since it uses less digits than its factorization.

55133407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254109.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 55133407 is about 7425.1873377040. The cubic root of 55133407 is about 380.6024768835.

The spelling of 55133407 in words is "fifty-five million, one hundred thirty-three thousand, four hundred seven".