55916149 has 4 divisors (see below), whose sum is σ = 56225260. Its totient is φ = 55607040.

The previous prime is 55916143. The next prime is 55916173. The reversal of 55916149 is 94161955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94161955 = 5 ⋅18832391.

It can be written as a sum of positive squares in 2 ways, for example, as 24354225 + 31561924 = 4935^2 + 5618^2 .

It is a cyclic number.

It is not a de Polignac number, because 55916149 - 2³ = 55916141 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 (55916141) 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, 154284 + ... + 154645.

It is an arithmetic number, because the mean of its divisors is an integer number (14056315).

Almost surely, 2^55916149 is an apocalyptic number.

It is an amenable number.

55916149 is a deficient number, since it is larger than the sum of its proper divisors (309111).

55916149 is a wasteful number, since it uses less digits than its factorization.

55916149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309110.

The product of its digits is 48600, while the sum is 40.

The square root of 55916149 is about 7477.7101441551. The cubic root of 55916149 is about 382.3951873669.

It can be divided in two parts, 55916 and 149, that added together give a palindrome (56065).

The spelling of 55916149 in words is "fifty-five million, nine hundred sixteen thousand, one hundred forty-nine".