151901215 has 4 divisors (see below), whose sum is σ = 182281464. Its totient is φ = 121520968.

The previous prime is 151901213. The next prime is 151901237. The reversal of 151901215 is 512109151.

It is a happy number.

151901215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512109151 = 137 ⋅3738023.

It is a cyclic number.

It is not a de Polignac number, because 151901215 - 2¹ = 151901213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151901215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151901213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15190117 + ... + 15190126.

It is an arithmetic number, because the mean of its divisors is an integer number (45570366).

Almost surely, 2^151901215 is an apocalyptic number.

151901215 is a deficient number, since it is larger than the sum of its proper divisors (30380249).

151901215 is an equidigital number, since it uses as much as digits as its factorization.

151901215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30380248.

The product of its (nonzero) digits is 450, while the sum is 25.

The square root of 151901215 is about 12324.8210940362. The cubic root of 151901215 is about 533.5646915068.

It can be divided in two parts, 15190 and 1215, that multiplied together give a triangular number (18455850 = T₆₀₇₅).

The spelling of 151901215 in words is "one hundred fifty-one million, nine hundred one thousand, two hundred fifteen".