55431015 has 8 divisors (see below), whose sum is σ = 88689648. Its totient is φ = 29563200.

The previous prime is 55431011. The next prime is 55431041. The reversal of 55431015 is 51013455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55431015 - 2² = 55431011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55431011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1847686 + ... + 1847715.

It is an arithmetic number, because the mean of its divisors is an integer number (11086206).

Almost surely, 2^55431015 is an apocalyptic number.

55431015 is a deficient number, since it is larger than the sum of its proper divisors (33258633).

55431015 is a wasteful number, since it uses less digits than its factorization.

55431015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695409.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 55431015 is about 7445.2008032020. The cubic root of 55431015 is about 381.2860741642.

The spelling of 55431015 in words is "fifty-five million, four hundred thirty-one thousand, fifteen".