55041399 has 24 divisors (see below), whose sum is σ = 93796352. Its totient is φ = 30436560.

The previous prime is 55041373. The next prime is 55041409. The reversal of 55041399 is 99314055.

55041399 is a `hidden beast` number, since 550 + 4 + 13 + 99 = 666.

It is not a de Polignac number, because 55041399 - 2¹¹ = 55039351 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55041299) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12139 + ... + 16044.

Almost surely, 2^55041399 is an apocalyptic number.

55041399 is a deficient number, since it is larger than the sum of its proper divisors (38754953).

55041399 is a wasteful number, since it uses less digits than its factorization.

55041399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28227 (or 28224 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 55041399 is about 7418.9890820785. The cubic root of 55041399 is about 380.3906393753.

It can be divided in two parts, 5504 and 1399, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 55041399 in words is "fifty-five million, forty-one thousand, three hundred ninety-nine".