55077571 has 16 divisors (see below), whose sum is σ = 60049728. Its totient is φ = 50371200.

The previous prime is 55077563. The next prime is 55077593. The reversal of 55077571 is 17577055.

It is a cyclic number.

It is not a de Polignac number, because 55077571 - 2³ = 55077563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55077571.

It is not an unprimeable number, because it can be changed into a prime (55077511) 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, 51381 + ... + 52441.

It is an arithmetic number, because the mean of its divisors is an integer number (3753108).

Almost surely, 2^55077571 is an apocalyptic number.

55077571 is a deficient number, since it is larger than the sum of its proper divisors (4972157).

55077571 is a wasteful number, since it uses less digits than its factorization.

55077571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182.

The product of its (nonzero) digits is 42875, while the sum is 37.

The square root of 55077571 is about 7421.4264801317. The cubic root of 55077571 is about 380.4739492561.

The spelling of 55077571 in words is "fifty-five million, seventy-seven thousand, five hundred seventy-one".