161554926 has 32 divisors (see below), whose sum is σ = 349201440. Its totient is φ = 49532544.

The previous prime is 161554909. The next prime is 161554931. The reversal of 161554926 is 629455161.

It is a super-2 number, since 2×161554926² = 52199988229730952, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19320 + ... + 26388.

It is an arithmetic number, because the mean of its divisors is an integer number (10912545).

Almost surely, 2^161554926 is an apocalyptic number.

161554926 is an abundant number, since it is smaller than the sum of its proper divisors (187646514).

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

161554926 is a wasteful number, since it uses less digits than its factorization.

161554926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380.

The product of its digits is 64800, while the sum is 39.

The square root of 161554926 is about 12710.4258779948. The cubic root of 161554926 is about 544.6364896327.

The spelling of 161554926 in words is "one hundred sixty-one million, five hundred fifty-four thousand, nine hundred twenty-six".