615315055 has 8 divisors (see below), whose sum is σ = 740754144. Its totient is φ = 490668000.

The previous prime is 615315047. The next prime is 615315061. The reversal of 615315055 is 550513516.

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

It is not a de Polignac number, because 615315055 - 2³ = 615315047 is a prime.

It is a super-2 number, since 2×615315055² = 757225233819306050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196296 + ... + 199405.

It is an arithmetic number, because the mean of its divisors is an integer number (92594268).

Almost surely, 2^615315055 is an apocalyptic number.

615315055 is a deficient number, since it is larger than the sum of its proper divisors (125439089).

615315055 is a wasteful number, since it uses less digits than its factorization.

615315055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396017.

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 615315055 is about 24805.5448438449. The cubic root of 615315055 is about 850.5486907165.

The spelling of 615315055 in words is "six hundred fifteen million, three hundred fifteen thousand, fifty-five".