161025151 has 4 divisors (see below), whose sum is σ = 184028752. Its totient is φ = 138021552.

The previous prime is 161025143. The next prime is 161025157. The reversal of 161025151 is 151520161.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 161025151 - 2³ = 161025143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161025157) 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, 11501790 + ... + 11501803.

It is an arithmetic number, because the mean of its divisors is an integer number (46007188).

Almost surely, 2^161025151 is an apocalyptic number.

161025151 is a deficient number, since it is larger than the sum of its proper divisors (23003601).

161025151 is an equidigital number, since it uses as much as digits as its factorization.

161025151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23003600.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 161025151 is about 12689.5685899876. The cubic root of 161025151 is about 544.0405091212.

The spelling of 161025151 in words is "one hundred sixty-one million, twenty-five thousand, one hundred fifty-one".