61317456 has 40 divisors (see below), whose sum is σ = 158754720. Its totient is φ = 20393856.

The previous prime is 61317439. The next prime is 61317457. The reversal of 61317456 is 65471316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61317457) 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, 25890 + ... + 28158.

It is an arithmetic number, because the mean of its divisors is an integer number (3968868).

Almost surely, 2^61317456 is an apocalyptic number.

It is an amenable number.

61317456 is an abundant number, since it is smaller than the sum of its proper divisors (97437264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61317456 is a wasteful number, since it uses less digits than its factorization.

61317456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843 (or 2837 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 61317456 is about 7830.5463410927. The cubic root of 61317456 is about 394.3314139726.

The spelling of 61317456 in words is "sixty-one million, three hundred seventeen thousand, four hundred fifty-six".