60507561 has 4 divisors (see below), whose sum is σ = 80676752. Its totient is φ = 40338372.

The previous prime is 60507553. The next prime is 60507589. The reversal of 60507561 is 16570506.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 60507561 - 2³ = 60507553 is a prime.

It is a super-2 number, since 2×60507561² = 7322329876337442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60507511) 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, 10084591 + ... + 10084596.

It is an arithmetic number, because the mean of its divisors is an integer number (20169188).

Almost surely, 2^60507561 is an apocalyptic number.

It is an amenable number.

60507561 is a deficient number, since it is larger than the sum of its proper divisors (20169191).

60507561 is a wasteful number, since it uses less digits than its factorization.

60507561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20169190.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 60507561 is about 7778.6606173557. The cubic root of 60507561 is about 392.5875737356.

The spelling of 60507561 in words is "sixty million, five hundred seven thousand, five hundred sixty-one".