55761583 has 4 divisors (see below), whose sum is σ = 57058408. Its totient is φ = 54464760.

The previous prime is 55761557. The next prime is 55761623. The reversal of 55761583 is 38516755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38516755 = 5 ⋅7703351.

It is a cyclic number.

It is not a de Polignac number, because 55761583 - 2⁵ = 55761551 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 (55761383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648348 + ... + 648433.

It is an arithmetic number, because the mean of its divisors is an integer number (14264602).

Almost surely, 2^55761583 is an apocalyptic number.

55761583 is a deficient number, since it is larger than the sum of its proper divisors (1296825).

55761583 is a wasteful number, since it uses less digits than its factorization.

55761583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296824.

The product of its digits is 126000, while the sum is 40.

The square root of 55761583 is about 7467.3678763002. The cubic root of 55761583 is about 382.0425174024.

The spelling of 55761583 in words is "fifty-five million, seven hundred sixty-one thousand, five hundred eighty-three".