55981514 has 4 divisors (see below), whose sum is σ = 83972274. Its totient is φ = 27990756.

The previous prime is 55981507. The next prime is 55981529. The reversal of 55981514 is 41518955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41518955 = 5 ⋅8303791.

It can be written as a sum of positive squares in only one way, i.e., 47955625 + 8025889 = 6925^2 + 2833^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13995377 + ... + 13995380.

Almost surely, 2^55981514 is an apocalyptic number.

55981514 is a deficient number, since it is larger than the sum of its proper divisors (27990760).

55981514 is a wasteful number, since it uses less digits than its factorization.

55981514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27990759.

The product of its digits is 36000, while the sum is 38.

The square root of 55981514 is about 7482.0795237688. The cubic root of 55981514 is about 382.5441337715.

The spelling of 55981514 in words is "fifty-five million, nine hundred eighty-one thousand, five hundred fourteen".