150551421 has 32 divisors (see below), whose sum is σ = 217728000. Its totient is φ = 92239488.

The previous prime is 150551413. The next prime is 150551437. The reversal of 150551421 is 124155051.

It is not a de Polignac number, because 150551421 - 2³ = 150551413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 150551391 and 150551400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150551321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299056 + ... + 299558.

It is an arithmetic number, because the mean of its divisors is an integer number (6804000).

Almost surely, 2^150551421 is an apocalyptic number.

It is an amenable number.

150551421 is a deficient number, since it is larger than the sum of its proper divisors (67176579).

150551421 is a wasteful number, since it uses less digits than its factorization.

150551421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 150551421 is about 12269.9397309033. The cubic root of 150551421 is about 531.9795686747.

The spelling of 150551421 in words is "one hundred fifty million, five hundred fifty-one thousand, four hundred twenty-one".