151491857 has 8 divisors (see below), whose sum is σ = 168780672. Its totient is φ = 134789200.

The previous prime is 151491833. The next prime is 151491859. The reversal of 151491857 is 758194151.

It is a happy number.

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 151491857 - 2⁶ = 151491793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151491859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145994 + ... + 147027.

It is an arithmetic number, because the mean of its divisors is an integer number (21097584).

Almost surely, 2^151491857 is an apocalyptic number.

It is an amenable number.

151491857 is a deficient number, since it is larger than the sum of its proper divisors (17288815).

151491857 is a wasteful number, since it uses less digits than its factorization.

151491857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293079.

The product of its digits is 50400, while the sum is 41.

The square root of 151491857 is about 12308.2028338828. The cubic root of 151491857 is about 533.0849598278.

The spelling of 151491857 in words is "one hundred fifty-one million, four hundred ninety-one thousand, eight hundred fifty-seven".