161457560 has 48 divisors (see below), whose sum is σ = 399319200. Its totient is φ = 58710080.

The previous prime is 161457559. The next prime is 161457563. The reversal of 161457560 is 65754161.

It is a self number, because there is not a number n which added to its sum of digits gives 161457560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161457563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11840 + ... + 21519.

It is an arithmetic number, because the mean of its divisors is an integer number (8319150).

Almost surely, 2^161457560 is an apocalyptic number.

161457560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161457560 is an abundant number, since it is smaller than the sum of its proper divisors (237861640).

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

161457560 is a wasteful number, since it uses less digits than its factorization.

161457560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33392 (or 33377 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 161457560 is about 12706.5951379589. The cubic root of 161457560 is about 544.5270537182.

The spelling of 161457560 in words is "one hundred sixty-one million, four hundred fifty-seven thousand, five hundred sixty".