55641477 has 8 divisors (see below), whose sum is σ = 74304864. Its totient is φ = 37036208.

The previous prime is 55641473. The next prime is 55641499. The reversal of 55641477 is 77414655.

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 55641477 - 2² = 55641473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55641473) 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, 12243 + ... + 16160.

It is an arithmetic number, because the mean of its divisors is an integer number (9288108).

Almost surely, 2^55641477 is an apocalyptic number.

It is an amenable number.

55641477 is a deficient number, since it is larger than the sum of its proper divisors (18663387).

55641477 is a wasteful number, since it uses less digits than its factorization.

55641477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29059.

The product of its digits is 117600, while the sum is 39.

The square root of 55641477 is about 7459.3214838885. The cubic root of 55641477 is about 381.7680238637.

The spelling of 55641477 in words is "fifty-five million, six hundred forty-one thousand, four hundred seventy-seven".