152520769 has 4 divisors (see below), whose sum is σ = 152559040. Its totient is φ = 152482500.

The previous prime is 152520737. The next prime is 152520793. The reversal of 152520769 is 967025251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 967025251 = 281 ⋅3441371.

It is a cyclic number.

It is not a de Polignac number, because 152520769 - 2⁵ = 152520737 is a prime.

It is a super-2 number, since 2×152520769² = 46525169952702722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152523769) 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, 12357 + ... + 21394.

It is an arithmetic number, because the mean of its divisors is an integer number (38139760).

Almost surely, 2^152520769 is an apocalyptic number.

It is an amenable number.

152520769 is a deficient number, since it is larger than the sum of its proper divisors (38271).

152520769 is an equidigital number, since it uses as much as digits as its factorization.

152520769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38270.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 152520769 is about 12349.9299188295. The cubic root of 152520769 is about 534.2891178467.

The spelling of 152520769 in words is "one hundred fifty-two million, five hundred twenty thousand, seven hundred sixty-nine".