55961877 has 8 divisors (see below), whose sum is σ = 76351264. Its totient is φ = 36440208.

The previous prime is 55961869. The next prime is 55961879. The reversal of 55961877 is 77816955.

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

It is not a de Polignac number, because 55961877 - 2³ = 55961869 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 (55961879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216778 + ... + 217035.

It is an arithmetic number, because the mean of its divisors is an integer number (9543908).

Almost surely, 2^55961877 is an apocalyptic number.

It is an amenable number.

55961877 is a deficient number, since it is larger than the sum of its proper divisors (20389387).

55961877 is a wasteful number, since it uses less digits than its factorization.

55961877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433859.

The product of its digits is 529200, while the sum is 48.

The square root of 55961877 is about 7480.7671398059. The cubic root of 55961877 is about 382.4993993754.

The spelling of 55961877 in words is "fifty-five million, nine hundred sixty-one thousand, eight hundred seventy-seven".