161351004 has 24 divisors (see below), whose sum is σ = 381024000. Its totient is φ = 53135344.

The previous prime is 161350999. The next prime is 161351009. The reversal of 161351004 is 400153161.

161351004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161350999) and next prime (161351009).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161351009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80004 + ... + 81995.

It is an arithmetic number, because the mean of its divisors is an integer number (15876000).

Almost surely, 2^161351004 is an apocalyptic number.

It is an amenable number.

161351004 is an abundant number, since it is smaller than the sum of its proper divisors (219672996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161351004 is a wasteful number, since it uses less digits than its factorization.

161351004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162089 (or 162087 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 161351004 is about 12702.4015052273. The cubic root of 161351004 is about 544.4072381380.

The spelling of 161351004 in words is "one hundred sixty-one million, three hundred fifty-one thousand, four".