161614457 has 4 divisors (see below), whose sum is σ = 161733540. Its totient is φ = 161495376.

The previous prime is 161614451. The next prime is 161614463. The reversal of 161614457 is 754416161.

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

It is an interprime number because it is at equal distance from previous prime (161614451) and next prime (161614463).

It can be written as a sum of positive squares in 2 ways, for example, as 124902976 + 36711481 = 11176^2 + 6059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161614457 is a prime.

It is a super-2 number, since 2×161614457² = 52238465422809698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161614451) 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, 57482 + ... + 60227.

It is an arithmetic number, because the mean of its divisors is an integer number (40433385).

Almost surely, 2^161614457 is an apocalyptic number.

It is an amenable number.

161614457 is a deficient number, since it is larger than the sum of its proper divisors (119083).

161614457 is a wasteful number, since it uses less digits than its factorization.

161614457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119082.

The product of its digits is 20160, while the sum is 35.

The square root of 161614457 is about 12712.7674799785. The cubic root of 161614457 is about 544.7033786964.

The spelling of 161614457 in words is "one hundred sixty-one million, six hundred fourteen thousand, four hundred fifty-seven".