152486921 has 2 divisors, whose sum is σ = 152486922. Its totient is φ = 152486920.

The previous prime is 152486903. The next prime is 152486933. The reversal of 152486921 is 129684251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127125625 + 25361296 = 11275^2 + 5036^2 .

It is a cyclic number.

It is not a de Polignac number, because 152486921 - 2¹⁸ = 152224777 is a prime.

It is a super-2 number, since 2×152486921² = 46504522152120482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (152486981) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76243460 + 76243461.

It is an arithmetic number, because the mean of its divisors is an integer number (76243461).

Almost surely, 2^152486921 is an apocalyptic number.

It is an amenable number.

152486921 is a deficient number, since it is larger than the sum of its proper divisors (1).

152486921 is an equidigital number, since it uses as much as digits as its factorization.

152486921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 152486921 is about 12348.5594706427. The cubic root of 152486921 is about 534.2495910855.

The spelling of 152486921 in words is "one hundred fifty-two million, four hundred eighty-six thousand, nine hundred twenty-one".