55719149 has 4 divisors (see below), whose sum is σ = 58996764. Its totient is φ = 52441536.

The previous prime is 55719137. The next prime is 55719227. The reversal of 55719149 is 94191755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31561924 + 24157225 = 5618^2 + 4915^2 .

It is a cyclic number.

It is not a de Polignac number, because 55719149 - 2¹² = 55715053 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 (55719119) 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, 1638782 + ... + 1638815.

It is an arithmetic number, because the mean of its divisors is an integer number (14749191).

Almost surely, 2^55719149 is an apocalyptic number.

It is an amenable number.

55719149 is a deficient number, since it is larger than the sum of its proper divisors (3277615).

55719149 is a wasteful number, since it uses less digits than its factorization.

55719149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277614.

The product of its digits is 56700, while the sum is 41.

The square root of 55719149 is about 7464.5260398769. The cubic root of 55719149 is about 381.9455826471.

The spelling of 55719149 in words is "fifty-five million, seven hundred nineteen thousand, one hundred forty-nine".