61059515 has 16 divisors (see below), whose sum is σ = 80269056. Its totient is φ = 44220000.

The previous prime is 61059487. The next prime is 61059539. The reversal of 61059515 is 51595016.

It is not a de Polignac number, because 61059515 - 2⁶ = 61059451 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11594 + ... + 16016.

It is an arithmetic number, because the mean of its divisors is an integer number (5016816).

Almost surely, 2^61059515 is an apocalyptic number.

61059515 is a deficient number, since it is larger than the sum of its proper divisors (19209541).

61059515 is a wasteful number, since it uses less digits than its factorization.

61059515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4690.

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 61059515 is about 7814.0588044882. The cubic root of 61059515 is about 393.7776988997. Note that the first 3 decimals are identical.

The spelling of 61059515 in words is "sixty-one million, fifty-nine thousand, five hundred fifteen".