161857048 has 32 divisors (see below), whose sum is σ = 321120000. Its totient is φ = 76269600.

The previous prime is 161856979. The next prime is 161857103. The reversal of 161857048 is 840758161.

161857048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161857048.

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, 27573 + ... + 32923.

It is an arithmetic number, because the mean of its divisors is an integer number (10035000).

Almost surely, 2^161857048 is an apocalyptic number.

It is an amenable number.

161857048 is a deficient number, since it is larger than the sum of its proper divisors (159262952).

161857048 is a wasteful number, since it uses less digits than its factorization.

161857048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575 (or 5571 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 161857048 is about 12722.3051370418. The cubic root of 161857048 is about 544.9757843518.

The spelling of 161857048 in words is "one hundred sixty-one million, eight hundred fifty-seven thousand, forty-eight".