615515061 has 16 divisors (see below), whose sum is σ = 939144704. Its totient is φ = 351266544.

The previous prime is 615515059. The next prime is 615515099. The reversal of 615515061 is 160515516.

It is not a de Polignac number, because 615515061 - 2¹ = 615515059 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615515041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2095 + ... + 35148.

It is an arithmetic number, because the mean of its divisors is an integer number (58696544).

Almost surely, 2^615515061 is an apocalyptic number.

It is an amenable number.

615515061 is a deficient number, since it is larger than the sum of its proper divisors (323629643).

615515061 is a wasteful number, since it uses less digits than its factorization.

615515061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38040.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 615515061 is about 24809.5759939585. The cubic root of 615515061 is about 850.6408366893.

The spelling of 615515061 in words is "six hundred fifteen million, five hundred fifteen thousand, sixty-one".