55069479 has 24 divisors (see below), whose sum is σ = 81591120. Its totient is φ = 35779968.

The previous prime is 55069471. The next prime is 55069489. The reversal of 55069479 is 97496055.

It is a happy number.

55069479 is a `hidden beast` number, since 550 + 6 + 94 + 7 + 9 = 666.

It is not a de Polignac number, because 55069479 - 2³ = 55069471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55069471) 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, 72369 + ... + 73125.

It is an arithmetic number, because the mean of its divisors is an integer number (3399630).

Almost surely, 2^55069479 is an apocalyptic number.

55069479 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

55069479 is a deficient number, since it is larger than the sum of its proper divisors (26521641).

55069479 is a wasteful number, since it uses less digits than its factorization.

55069479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 55069479 is about 7420.8812818964. The cubic root of 55069479 is about 380.4553152584.

The spelling of 55069479 in words is "fifty-five million, sixty-nine thousand, four hundred seventy-nine".