150644421 has 16 divisors (see below), whose sum is σ = 224473920. Its totient is φ = 99846000.

The previous prime is 150644399. The next prime is 150644443. The reversal of 150644421 is 124446051.

150644421 is a `hidden beast` number, since 15 + 0 + 644 + 4 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (150644399) and next prime (150644443).

It is not a de Polignac number, because 150644421 - 2¹⁸ = 150382277 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150644471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11455 + ... + 20796.

It is an arithmetic number, because the mean of its divisors is an integer number (14029620).

Almost surely, 2^150644421 is an apocalyptic number.

It is an amenable number.

150644421 is a deficient number, since it is larger than the sum of its proper divisors (73829499).

150644421 is a wasteful number, since it uses less digits than its factorization.

150644421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32433 (or 32427 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 150644421 is about 12273.7288954906. The cubic root of 150644421 is about 532.0890858878.

The spelling of 150644421 in words is "one hundred fifty million, six hundred forty-four thousand, four hundred twenty-one".