152243521 has 8 divisors (see below), whose sum is σ = 155954304. Its totient is φ = 148540560.

The previous prime is 152243501. The next prime is 152243527. The reversal of 152243521 is 125342251.

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 152243521 - 2⁷ = 152243393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152243527) 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, 62751 + ... + 65131.

It is an arithmetic number, because the mean of its divisors is an integer number (19494288).

Almost surely, 2^152243521 is an apocalyptic number.

It is an amenable number.

152243521 is a deficient number, since it is larger than the sum of its proper divisors (3710783).

152243521 is a wasteful number, since it uses less digits than its factorization.

152243521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911.

The product of its digits is 2400, while the sum is 25.

The square root of 152243521 is about 12338.7001341308. The cubic root of 152243521 is about 533.9651828684.

Adding to 152243521 its reverse (125342251), we get a palindrome (277585772).

The spelling of 152243521 in words is "one hundred fifty-two million, two hundred forty-three thousand, five hundred twenty-one".