161612151 has 8 divisors (see below), whose sum is σ = 219135360. Its totient is φ = 105915192.

The previous prime is 161612147. The next prime is 161612161. The reversal of 161612151 is 151216161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161612151 - 2² = 161612147 is a prime.

It is a super-2 number, since 2×161612151² = 52236974701693602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161612111) 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, 456355 + ... + 456708.

It is an arithmetic number, because the mean of its divisors is an integer number (27391920).

Almost surely, 2^161612151 is an apocalyptic number.

161612151 is a deficient number, since it is larger than the sum of its proper divisors (57523209).

161612151 is an equidigital number, since it uses as much as digits as its factorization.

161612151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913125.

The product of its digits is 360, while the sum is 24.

The square root of 161612151 is about 12712.6767834316. The cubic root of 161612151 is about 544.7007879794.

The spelling of 161612151 in words is "one hundred sixty-one million, six hundred twelve thousand, one hundred fifty-one".