152465521 has 4 divisors (see below), whose sum is σ = 164193652. Its totient is φ = 140737392.

The previous prime is 152465513. The next prime is 152465549. The reversal of 152465521 is 125564251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125564251 = 1049 ⋅119699.

It can be written as a sum of positive squares in 2 ways, for example, as 78074896 + 74390625 = 8836^2 + 8625^2 .

It is a cyclic number.

It is not a de Polignac number, because 152465521 - 2³ = 152465513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152465021) 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, 5864046 + ... + 5864071.

It is an arithmetic number, because the mean of its divisors is an integer number (41048413).

Almost surely, 2^152465521 is an apocalyptic number.

It is an amenable number.

152465521 is a deficient number, since it is larger than the sum of its proper divisors (11728131).

152465521 is a wasteful number, since it uses less digits than its factorization.

152465521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11728130.

The product of its digits is 12000, while the sum is 31.

The square root of 152465521 is about 12347.6929424083. The cubic root of 152465521 is about 534.2245977373.

The spelling of 152465521 in words is "one hundred fifty-two million, four hundred sixty-five thousand, five hundred twenty-one".