152215531 has 8 divisors (see below), whose sum is σ = 164649744. Its totient is φ = 139884960.

The previous prime is 152215507. The next prime is 152215559. The reversal of 152215531 is 135512251.

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 152215531 - 2²¹ = 150118379 is a prime.

It is a super-2 number, since 2×152215531² = 46339135755223922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152215496 and 152215505.

It is not an unprimeable number, because it can be changed into a prime (152215831) 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, 22840 + ... + 28741.

It is an arithmetic number, because the mean of its divisors is an integer number (20581218).

Almost surely, 2^152215531 is an apocalyptic number.

152215531 is a deficient number, since it is larger than the sum of its proper divisors (12434213).

152215531 is a wasteful number, since it uses less digits than its factorization.

152215531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51821.

The product of its digits is 1500, while the sum is 25.

The square root of 152215531 is about 12337.5658458223. The cubic root of 152215531 is about 533.9324576630.

Adding to 152215531 its reverse (135512251), we get a palindrome (287727782).

The spelling of 152215531 in words is "one hundred fifty-two million, two hundred fifteen thousand, five hundred thirty-one".