151972249 has 16 divisors (see below), whose sum is σ = 180036864. Its totient is φ = 127514640.

The previous prime is 151972243. The next prime is 151972297. The reversal of 151972249 is 942279151.

It is a happy number.

151972249 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 151972249 - 2¹¹ = 151970201 is a prime.

It is a super-2 number, since 2×151972249² = 46191128932236002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151972243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12912 + ... + 21694.

It is an arithmetic number, because the mean of its divisors is an integer number (11252304).

Almost surely, 2^151972249 is an apocalyptic number.

It is an amenable number.

151972249 is a deficient number, since it is larger than the sum of its proper divisors (28064615).

151972249 is an equidigital number, since it uses as much as digits as its factorization.

151972249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8829 (or 8807 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 151972249 is about 12327.7025028997. The cubic root of 151972249 is about 533.6478493404.

The spelling of 151972249 in words is "one hundred fifty-one million, nine hundred seventy-two thousand, two hundred forty-nine".