61513653 has 8 divisors (see below), whose sum is σ = 84018816. Its totient is φ = 40008800.

The previous prime is 61513649. The next prime is 61513687. The reversal of 61513653 is 35631516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61513653 - 2² = 61513649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61513653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61513603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249933 + ... + 250178.

It is an arithmetic number, because the mean of its divisors is an integer number (10502352).

Almost surely, 2^61513653 is an apocalyptic number.

It is an amenable number.

61513653 is a deficient number, since it is larger than the sum of its proper divisors (22505163).

61513653 is a wasteful number, since it uses less digits than its factorization.

61513653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500155.

The product of its digits is 8100, while the sum is 30.

The square root of 61513653 is about 7843.0640058589. The cubic root of 61513653 is about 394.7515459402.

The spelling of 61513653 in words is "sixty-one million, five hundred thirteen thousand, six hundred fifty-three".