61534913 has 12 divisors (see below), whose sum is σ = 70581504. Its totient is φ = 53506200.

The previous prime is 61534903. The next prime is 61534927. The reversal of 61534913 is 31943516.

It is not a de Polignac number, because 61534913 - 2¹⁰ = 61533889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61534913.

It is not an unprimeable number, because it can be changed into a prime (61534903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8273 + ... + 13838.

It is an arithmetic number, because the mean of its divisors is an integer number (5881792).

Almost surely, 2^61534913 is an apocalyptic number.

It is an amenable number.

61534913 is a deficient number, since it is larger than the sum of its proper divisors (9046591).

61534913 is a wasteful number, since it uses less digits than its factorization.

61534913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22156 (or 22145 counting only the distinct ones).

The product of its digits is 9720, while the sum is 32.

The square root of 61534913 is about 7844.4192264310. The cubic root of 61534913 is about 394.7970179658.

The spelling of 61534913 in words is "sixty-one million, five hundred thirty-four thousand, nine hundred thirteen".