152021515 has 16 divisors (see below), whose sum is σ = 184559616. Its totient is φ = 120204000.

The previous prime is 152021479. The next prime is 152021533. The reversal of 152021515 is 515120251.

It is a happy number.

It is not a de Polignac number, because 152021515 - 2⁹ = 152021003 is a prime.

It is a super-2 number, since 2×152021515² = 46221082045790450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204234 + ... + 204976.

It is an arithmetic number, because the mean of its divisors is an integer number (11534976).

Almost surely, 2^152021515 is an apocalyptic number.

152021515 is a deficient number, since it is larger than the sum of its proper divisors (32538101).

152021515 is a wasteful number, since it uses less digits than its factorization.

152021515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 152021515 is about 12329.7005235326. The cubic root of 152021515 is about 533.7055086711.

Adding to 152021515 its reverse (515120251), we get a palindrome (667141766).

The spelling of 152021515 in words is "one hundred fifty-two million, twenty-one thousand, five hundred fifteen".