151646421 has 8 divisors (see below), whose sum is σ = 202310784. Its totient is φ = 101039840.

The previous prime is 151646401. The next prime is 151646459. The reversal of 151646421 is 124646151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 151646421 - 2⁶ = 151646357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151646401) 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 7 ways as a sum of consecutive naturals, for example, 7896 + ... + 19121.

It is an arithmetic number, because the mean of its divisors is an integer number (25288848).

Almost surely, 2^151646421 is an apocalyptic number.

It is an amenable number.

151646421 is a deficient number, since it is larger than the sum of its proper divisors (50664363).

151646421 is a wasteful number, since it uses less digits than its factorization.

151646421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28891.

The product of its digits is 5760, while the sum is 30.

The square root of 151646421 is about 12314.4801351904. The cubic root of 151646421 is about 533.2661967140.

The spelling of 151646421 in words is "one hundred fifty-one million, six hundred forty-six thousand, four hundred twenty-one".