61256653 has 4 divisors (see below), whose sum is σ = 61945020. Its totient is φ = 60568288.

The previous prime is 61256647. The next prime is 61256687. The reversal of 61256653 is 35665216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3694084 + 57562569 = 1922^2 + 7587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61256653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61256353) 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, 344050 + ... + 344227.

It is an arithmetic number, because the mean of its divisors is an integer number (15486255).

Almost surely, 2^61256653 is an apocalyptic number.

It is an amenable number.

61256653 is a deficient number, since it is larger than the sum of its proper divisors (688367).

61256653 is an equidigital number, since it uses as much as digits as its factorization.

61256653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688366.

The product of its digits is 32400, while the sum is 34.

The square root of 61256653 is about 7826.6629542865. The cubic root of 61256653 is about 394.2010298807.

The spelling of 61256653 in words is "sixty-one million, two hundred fifty-six thousand, six hundred fifty-three".