61456651 has 4 divisors (see below), whose sum is σ = 61472392. Its totient is φ = 61440912.

The previous prime is 61456643. The next prime is 61456657. The reversal of 61456651 is 15665416.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61456651 - 2³ = 61456643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61456657) 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, 2896 + ... + 11458.

It is an arithmetic number, because the mean of its divisors is an integer number (15368098).

Almost surely, 2^61456651 is an apocalyptic number.

61456651 is a deficient number, since it is larger than the sum of its proper divisors (15741).

61456651 is an equidigital number, since it uses as much as digits as its factorization.

61456651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15740.

The product of its digits is 21600, while the sum is 34.

The square root of 61456651 is about 7839.4292521841. The cubic root of 61456651 is about 394.6295752853.

The spelling of 61456651 in words is "sixty-one million, four hundred fifty-six thousand, six hundred fifty-one".