61293513 has 4 divisors (see below), whose sum is σ = 81724688. Its totient is φ = 40862340.

The previous prime is 61293511. The next prime is 61293521. The reversal of 61293513 is 31539216.

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 61293513 - 2¹ = 61293511 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61293511) 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, 10215583 + ... + 10215588.

It is an arithmetic number, because the mean of its divisors is an integer number (20431172).

Almost surely, 2^61293513 is an apocalyptic number.

It is an amenable number.

61293513 is a deficient number, since it is larger than the sum of its proper divisors (20431175).

61293513 is a wasteful number, since it uses less digits than its factorization.

61293513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20431174.

The product of its digits is 4860, while the sum is 30.

The square root of 61293513 is about 7829.0173712925. The cubic root of 61293513 is about 394.2800816288.

The spelling of 61293513 in words is "sixty-one million, two hundred ninety-three thousand, five hundred thirteen".