161672250 has 32 divisors (see below), whose sum is σ = 403535808. Its totient is φ = 43112400.

The previous prime is 161672243. The next prime is 161672309. The reversal of 161672250 is 52276161.

161672250 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161672250² = 52275832840125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107032 + ... + 108531.

It is an arithmetic number, because the mean of its divisors is an integer number (12610494).

Almost surely, 2^161672250 is an apocalyptic number.

161672250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161672250 is an abundant number, since it is smaller than the sum of its proper divisors (241863558).

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

161672250 is a wasteful number, since it uses less digits than its factorization.

161672250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215583 (or 215573 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 161672250 is about 12715.0403066605. The cubic root of 161672250 is about 544.7682992308.

The spelling of 161672250 in words is "one hundred sixty-one million, six hundred seventy-two thousand, two hundred fifty".