55269819 has 24 divisors (see below), whose sum is σ = 87639552. Its totient is φ = 33286320.

The previous prime is 55269811. The next prime is 55269821. The reversal of 55269819 is 91896255.

55269819 is a `hidden beast` number, since 552 + 6 + 98 + 1 + 9 = 666.

It is not a de Polignac number, because 55269819 - 2³ = 55269811 is a prime.

It is a super-2 number, since 2×55269819² = 6109505784585522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55269811) 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, 14862 + ... + 18204.

It is an arithmetic number, because the mean of its divisors is an integer number (3651648).

Almost surely, 2^55269819 is an apocalyptic number.

55269819 is a deficient number, since it is larger than the sum of its proper divisors (32369733).

55269819 is a wasteful number, since it uses less digits than its factorization.

55269819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527 (or 3524 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 55269819 is about 7434.3674243341. The cubic root of 55269819 is about 380.9161160317.

The spelling of 55269819 in words is "fifty-five million, two hundred sixty-nine thousand, eight hundred nineteen".