61316530 has 16 divisors (see below), whose sum is σ = 120403584. Its totient is φ = 22296880.

The previous prime is 61316491. The next prime is 61316531. The reversal of 61316530 is 3561316.

It is a junction number, because it is equal to n+sod(n) for n = 61316495 and 61316504.

It is not an unprimeable number, because it can be changed into a prime (61316531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278602 + ... + 278821.

It is an arithmetic number, because the mean of its divisors is an integer number (7525224).

Almost surely, 2^61316530 is an apocalyptic number.

61316530 is a deficient number, since it is larger than the sum of its proper divisors (59087054).

61316530 is a wasteful number, since it uses less digits than its factorization.

61316530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557441.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 61316530 is about 7830.4872134497. The cubic root of 61316530 is about 394.3294289331.

Adding to 61316530 its reverse (3561316), we get a palindrome (64877846).

The spelling of 61316530 in words is "sixty-one million, three hundred sixteen thousand, five hundred thirty".