161250544 has 40 divisors (see below), whose sum is σ = 384524000. Its totient is φ = 63790848.

The previous prime is 161250533. The next prime is 161250563. The reversal of 161250544 is 445052161.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53919 + ... + 56830.

It is an arithmetic number, because the mean of its divisors is an integer number (9613100).

Almost surely, 2^161250544 is an apocalyptic number.

161250544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161250544 is an abundant number, since it is smaller than the sum of its proper divisors (223273456).

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

161250544 is a wasteful number, since it uses less digits than its factorization.

161250544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110777 (or 110771 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 161250544 is about 12698.4465191613. The cubic root of 161250544 is about 544.2942288100.

The spelling of 161250544 in words is "one hundred sixty-one million, two hundred fifty thousand, five hundred forty-four".