161456651 has 8 divisors (see below), whose sum is σ = 162811584. Its totient is φ = 160107840.

The previous prime is 161456629. The next prime is 161456677. The reversal of 161456651 is 156654161.

161456651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161456651 - 2¹⁸ = 161194507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161456611) 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, 61865 + ... + 64421.

It is an arithmetic number, because the mean of its divisors is an integer number (20351448).

Almost surely, 2^161456651 is an apocalyptic number.

161456651 is a deficient number, since it is larger than the sum of its proper divisors (1354933).

161456651 is a wasteful number, since it uses less digits than its factorization.

161456651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061.

The product of its digits is 21600, while the sum is 35.

The square root of 161456651 is about 12706.5593690818. The cubic root of 161456651 is about 544.5260318273.

The spelling of 161456651 in words is "one hundred sixty-one million, four hundred fifty-six thousand, six hundred fifty-one".