61512494 has 24 divisors (see below), whose sum is σ = 101206848. Its totient is φ = 28005120.

The previous prime is 61512487. The next prime is 61512497. The reversal of 61512494 is 49421516.

It is a self number, because there is not a number n which added to its sum of digits gives 61512494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61512497) 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, 16202 + ... + 19634.

It is an arithmetic number, because the mean of its divisors is an integer number (4216952).

Almost surely, 2^61512494 is an apocalyptic number.

61512494 is a deficient number, since it is larger than the sum of its proper divisors (39694354).

61512494 is a wasteful number, since it uses less digits than its factorization.

61512494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500 (or 3483 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 61512494 is about 7842.9901185709. The cubic root of 61512494 is about 394.7490667079.

The spelling of 61512494 in words is "sixty-one million, five hundred twelve thousand, four hundred ninety-four".