61456331 has 8 divisors (see below), whose sum is σ = 63087024. Its totient is φ = 59834880.

The previous prime is 61456273. The next prime is 61456337. The reversal of 61456331 is 13365416.

It is a happy number.

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 61456331 - 2⁶ = 61456267 is a prime.

It is a super-2 number, since 2×61456331² = 7553761239963122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61456294 and 61456303.

It is not an unprimeable number, because it can be changed into a prime (61456337) 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, 12371 + ... + 16611.

It is an arithmetic number, because the mean of its divisors is an integer number (7885878).

Almost surely, 2^61456331 is an apocalyptic number.

61456331 is a deficient number, since it is larger than the sum of its proper divisors (1630693).

61456331 is a wasteful number, since it uses less digits than its factorization.

61456331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4621.

The product of its digits is 6480, while the sum is 29.

The square root of 61456331 is about 7839.4088425085. The cubic root of 61456331 is about 394.6288903490.

The spelling of 61456331 in words is "sixty-one million, four hundred fifty-six thousand, three hundred thirty-one".