152420521 has 16 divisors (see below), whose sum is σ = 181744128. Its totient is φ = 126201600.

The previous prime is 152420519. The next prime is 152420531. The reversal of 152420521 is 125024251.

It is a cyclic number.

It is not a de Polignac number, because 152420521 - 2¹ = 152420519 is a prime.

It is a super-2 number, since 2×152420521² = 46464030443822882, 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 = 152420492 and 152420501.

It is not an unprimeable number, because it can be changed into a prime (152420531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7350 + ... + 18943.

It is an arithmetic number, because the mean of its divisors is an integer number (11359008).

Almost surely, 2^152420521 is an apocalyptic number.

152420521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

152420521 is a deficient number, since it is larger than the sum of its proper divisors (29323607).

152420521 is a wasteful number, since it uses less digits than its factorization.

152420521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26352.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 152420521 is about 12345.8706051862. The cubic root of 152420521 is about 534.1720340008.

Adding to 152420521 its reverse (125024251), we get a palindrome (277444772).

The spelling of 152420521 in words is "one hundred fifty-two million, four hundred twenty thousand, five hundred twenty-one".