152968991 has 8 divisors (see below), whose sum is σ = 179085984. Its totient is φ = 127918080.

The previous prime is 152968979. The next prime is 152968993. The reversal of 152968991 is 199869251.

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 152968991 - 2¹⁰ = 152967967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152968993) 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, 266210 + ... + 266783.

It is an arithmetic number, because the mean of its divisors is an integer number (22385748).

Almost surely, 2^152968991 is an apocalyptic number.

152968991 is a deficient number, since it is larger than the sum of its proper divisors (26116993).

152968991 is an equidigital number, since it uses as much as digits as its factorization.

152968991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533041.

The product of its digits is 349920, while the sum is 50.

The square root of 152968991 is about 12368.0633488028. The cubic root of 152968991 is about 534.8119885552.

The spelling of 152968991 in words is "one hundred fifty-two million, nine hundred sixty-eight thousand, nine hundred ninety-one".