161755464 has 32 divisors (see below), whose sum is σ = 435496320. Its totient is φ = 49770816.

The previous prime is 161755457. The next prime is 161755471. The reversal of 161755464 is 464557161.

It is an interprime number because it is at equal distance from previous prime (161755457) and next prime (161755471).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 258912 + ... + 259535.

It is an arithmetic number, because the mean of its divisors is an integer number (13609260).

Almost surely, 2^161755464 is an apocalyptic number.

It is an amenable number.

161755464 is an abundant number, since it is smaller than the sum of its proper divisors (273740856).

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

161755464 is a wasteful number, since it uses less digits than its factorization.

161755464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518469 (or 518465 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 161755464 is about 12718.3121521686. The cubic root of 161755464 is about 544.8617487329.

The spelling of 161755464 in words is "one hundred sixty-one million, seven hundred fifty-five thousand, four hundred sixty-four".