55130691 has 32 divisors (see below), whose sum is σ = 93897216. Its totient is φ = 27936000.

The previous prime is 55130689. The next prime is 55130693. The reversal of 55130691 is 19603155.

It is an interprime number because it is at equal distance from previous prime (55130689) and next prime (55130693).

It is not a de Polignac number, because 55130691 - 2¹ = 55130689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55130693) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6561 + ... + 12381.

It is an arithmetic number, because the mean of its divisors is an integer number (2934288).

Almost surely, 2^55130691 is an apocalyptic number.

55130691 is a deficient number, since it is larger than the sum of its proper divisors (38766525).

55130691 is a wasteful number, since it uses less digits than its factorization.

55130691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 55130691 is about 7425.0044444431. The cubic root of 55130691 is about 380.5962269928.

The spelling of 55130691 in words is "fifty-five million, one hundred thirty thousand, six hundred ninety-one".