55147023 has 6 divisors (see below), whose sum is σ = 79656824. Its totient is φ = 36764676.

The previous prime is 55147019. The next prime is 55147033. The reversal of 55147023 is 32074155.

It is a happy number.

It is not a de Polignac number, because 55147023 - 2² = 55147019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55147033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3063715 + ... + 3063732.

Almost surely, 2^55147023 is an apocalyptic number.

55147023 is a deficient number, since it is larger than the sum of its proper divisors (24509801).

55147023 is a wasteful number, since it uses less digits than its factorization.

55147023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6127453 (or 6127450 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55147023 is about 7426.1041603253. The cubic root of 55147023 is about 380.6338060845.

It can be divided in two parts, 551 and 47023, that added together give a palindrome (47574).

The spelling of 55147023 in words is "fifty-five million, one hundred forty-seven thousand, twenty-three".