161151756 has 24 divisors (see below), whose sum is σ = 376333104. Its totient is φ = 53672640.

The previous prime is 161151707. The next prime is 161151763. The reversal of 161151756 is 657151161.

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, 11586 + ... + 21366.

It is an arithmetic number, because the mean of its divisors is an integer number (15680546).

Almost surely, 2^161151756 is an apocalyptic number.

It is an amenable number.

161151756 is an abundant number, since it is smaller than the sum of its proper divisors (215181348).

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

161151756 is a wasteful number, since it uses less digits than its factorization.

161151756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11161 (or 11159 counting only the distinct ones).

The product of its digits is 6300, while the sum is 33.

The square root of 161151756 is about 12694.5561560852. The cubic root of 161151756 is about 544.1830545650.

It can be divided in two parts, 16115 and 1756, that added together give a palindrome (17871).

The spelling of 161151756 in words is "one hundred sixty-one million, one hundred fifty-one thousand, seven hundred fifty-six".