5015661601 has 4 divisors (see below), whose sum is σ = 5035178052. Its totient is φ = 4996145152.

The previous prime is 5015661593. The next prime is 5015661611. The reversal of 5015661601 is 1061665105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2560360000 + 2455301601 = 50600^2 + 49551^2 .

It is a cyclic number.

It is not a de Polignac number, because 5015661601 - 2³ = 5015661593 is a prime.

It is a super-2 number, since 2×5015661601² = 50313722591491766402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5015661611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9757840 + ... + 9758353.

It is an arithmetic number, because the mean of its divisors is an integer number (1258794513).

Almost surely, 2^5015661601 is an apocalyptic number.

It is an amenable number.

5015661601 is a deficient number, since it is larger than the sum of its proper divisors (19516451).

5015661601 is a wasteful number, since it uses less digits than its factorization.

5015661601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19516450.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 5015661601 is about 70821.3357753156. The cubic root of 5015661601 is about 1711.7594831682.

The spelling of 5015661601 in words is "five billion, fifteen million, six hundred sixty-one thousand, six hundred one".