55947149 has 4 divisors (see below), whose sum is σ = 55974336. Its totient is φ = 55919964.

The previous prime is 55947139. The next prime is 55947169. The reversal of 55947149 is 94174955.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55947149 - 2⁸ = 55946893 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 (55947139) 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, 10229 + ... + 14714.

It is an arithmetic number, because the mean of its divisors is an integer number (13993584).

Almost surely, 2^55947149 is an apocalyptic number.

It is an amenable number.

55947149 is a deficient number, since it is larger than the sum of its proper divisors (27187).

55947149 is a wasteful number, since it uses less digits than its factorization.

55947149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27186.

The product of its digits is 226800, while the sum is 44.

The square root of 55947149 is about 7479.7826840089. The cubic root of 55947149 is about 382.4658411405.

The spelling of 55947149 in words is "fifty-five million, nine hundred forty-seven thousand, one hundred forty-nine".