55150531615 has 8 divisors (see below), whose sum is σ = 66182553360. Its totient is φ = 44119148352.

The previous prime is 55150531613. The next prime is 55150531661. The reversal of 55150531615 is 51613505155.

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

It is a cyclic number.

It is not a de Polignac number, because 55150531615 - 2¹ = 55150531613 is a prime.

It is a super-2 number, since 2×55150531615² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55150531613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57187 + ... + 337003.

It is an arithmetic number, because the mean of its divisors is an integer number (8272819170).

Almost surely, 2^55150531615 is an apocalyptic number.

55150531615 is a deficient number, since it is larger than the sum of its proper divisors (11032021745).

55150531615 is a wasteful number, since it uses less digits than its factorization.

55150531615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319241.

The product of its (nonzero) digits is 56250, while the sum is 37.

The spelling of 55150531615 in words is "fifty-five billion, one hundred fifty million, five hundred thirty-one thousand, six hundred fifteen".