150097981 has 16 divisors (see below), whose sum is σ = 174571200. Its totient is φ = 127540480.

The previous prime is 150097979. The next prime is 150097991. The reversal of 150097981 is 189790051.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 150097981 - 2¹ = 150097979 is a prime.

It is a super-2 number, since 2×150097981² = 45058807800552722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150097991) by changing a digit.

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, 25170 + ... + 30556.

It is an arithmetic number, because the mean of its divisors is an integer number (10910700).

Almost surely, 2^150097981 is an apocalyptic number.

150097981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

150097981 is a deficient number, since it is larger than the sum of its proper divisors (24473219).

150097981 is a wasteful number, since it uses less digits than its factorization.

150097981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 150097981 is about 12251.4481184879. The cubic root of 150097981 is about 531.4449486877. Note that the first 3 decimals are identical.

The spelling of 150097981 in words is "one hundred fifty million, ninety-seven thousand, nine hundred eighty-one".