151535421 has 8 divisors (see below), whose sum is σ = 224496960. Its totient is φ = 101023596.

The previous prime is 151535383. The next prime is 151535479. The reversal of 151535421 is 124535151.

151535421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 151535421 - 2⁶ = 151535357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5612423 = 151535421 / (1 + 5 + 1 + 5 + 3 + 5 + 4 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151535521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2806185 + ... + 2806238.

It is an arithmetic number, because the mean of its divisors is an integer number (28062120).

Almost surely, 2^151535421 is an apocalyptic number.

It is an amenable number.

151535421 is a deficient number, since it is larger than the sum of its proper divisors (72961539).

151535421 is an equidigital number, since it uses as much as digits as its factorization.

151535421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5612432 (or 5612426 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 151535421 is about 12309.9724207652. The cubic root of 151535421 is about 533.1360540756.

The spelling of 151535421 in words is "one hundred fifty-one million, five hundred thirty-five thousand, four hundred twenty-one".