55151559 has 12 divisors (see below), whose sum is σ = 80672800. Its totient is φ = 36301824.

The previous prime is 55151557. The next prime is 55151561. The reversal of 55151559 is 95515155.

It is a happy number.

55151559 is a `hidden beast` number, since 5 + 51 + 51 + 559 = 666.

It is an interprime number because it is at equal distance from previous prime (55151557) and next prime (55151561).

It is not a de Polignac number, because 55151559 - 2¹ = 55151557 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 (55151557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38074 + ... + 39495.

Almost surely, 2^55151559 is an apocalyptic number.

55151559 is a deficient number, since it is larger than the sum of its proper divisors (25521241).

55151559 is a wasteful number, since it uses less digits than its factorization.

55151559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77654 (or 77651 counting only the distinct ones).

The product of its digits is 28125, while the sum is 36.

The square root of 55151559 is about 7426.4095631738. The cubic root of 55151559 is about 380.6442418706.

The spelling of 55151559 in words is "fifty-five million, one hundred fifty-one thousand, five hundred fifty-nine".