151521420 has 48 divisors (see below), whose sum is σ = 433294848. Its totient is φ = 39545280.

The previous prime is 151521413. The next prime is 151521431. The reversal of 151521420 is 24125151.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24046 + ... + 29685.

It is an arithmetic number, because the mean of its divisors is an integer number (9026976).

Almost surely, 2^151521420 is an apocalyptic number.

151521420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151521420 is an abundant number, since it is smaller than the sum of its proper divisors (281773428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151521420 is a wasteful number, since it uses less digits than its factorization.

151521420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53790 (or 53788 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 151521420 is about 12309.4037223580. The cubic root of 151521420 is about 533.1196340031.

Adding to 151521420 its reverse (24125151), we get a palindrome (175646571).

The spelling of 151521420 in words is "one hundred fifty-one million, five hundred twenty-one thousand, four hundred twenty".