55769847 has 16 divisors (see below), whose sum is σ = 85370880. Its totient is φ = 31722912.

The previous prime is 55769821. The next prime is 55769849. The reversal of 55769847 is 74896755.

It is not a de Polignac number, because 55769847 - 2¹¹ = 55767799 is a prime.

It is a super-2 number, since 2×55769847² = 6220551668806818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55769847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55769849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1272 + ... + 10637.

It is an arithmetic number, because the mean of its divisors is an integer number (5335680).

Almost surely, 2^55769847 is an apocalyptic number.

55769847 is a deficient number, since it is larger than the sum of its proper divisors (29601033).

55769847 is a wasteful number, since it uses less digits than its factorization.

55769847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12142.

The product of its digits is 2116800, while the sum is 51.

The square root of 55769847 is about 7467.9211966919. The cubic root of 55769847 is about 382.0613896751.

It can be divided in two parts, 55769 and 847, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 55769847 in words is "fifty-five million, seven hundred sixty-nine thousand, eight hundred forty-seven".