161260500 has 48 divisors (see below), whose sum is σ = 469594944. Its totient is φ = 43002400.

The previous prime is 161260499. The next prime is 161260501. The reversal of 161260500 is 5062161.

It is a happy number.

161260500 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 an interprime number because it is at equal distance from previous prime (161260499) and next prime (161260501).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161260501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52254 + ... + 55253.

It is an arithmetic number, because the mean of its divisors is an integer number (9783228).

Almost surely, 2^161260500 is an apocalyptic number.

161260500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161260500 is an abundant number, since it is smaller than the sum of its proper divisors (308334444).

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

161260500 is a wasteful number, since it uses less digits than its factorization.

161260500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107529 (or 107517 counting only the distinct ones).

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

The square root of 161260500 is about 12698.8385295664. The cubic root of 161260500 is about 544.3054305951.

The spelling of 161260500 in words is "one hundred sixty-one million, two hundred sixty thousand, five hundred".