55761605 has 8 divisors (see below), whose sum is σ = 66975000. Its totient is φ = 44568576.

The previous prime is 55761557. The next prime is 55761623. The reversal of 55761605 is 50616755.

It can be written as a sum of positive squares in 4 ways, for example, as 20449 + 55741156 = 143^2 + 7466^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55761605 - 2¹⁰ = 55760581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1781 + ... + 10709.

It is an arithmetic number, because the mean of its divisors is an integer number (8371875).

Almost surely, 2^55761605 is an apocalyptic number.

It is an amenable number.

55761605 is a deficient number, since it is larger than the sum of its proper divisors (11213395).

55761605 is a wasteful number, since it uses less digits than its factorization.

55761605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10183.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 55761605 is about 7467.3693493760. The cubic root of 55761605 is about 382.0425676456.

The spelling of 55761605 in words is "fifty-five million, seven hundred sixty-one thousand, six hundred five".