153494987 has 2 divisors, whose sum is σ = 153494988. Its totient is φ = 153494986.

The previous prime is 153494951. The next prime is 153495011. The reversal of 153494987 is 789494351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 153494987 - 2¹⁸ = 153232843 is a prime.

It is a super-2 number, since 2×153494987² = 47121422068260338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (153494917) by changing a digit.

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 as a sum of consecutive naturals, namely, 76747493 + 76747494.

It is an arithmetic number, because the mean of its divisors is an integer number (76747494).

Almost surely, 2^153494987 is an apocalyptic number.

153494987 is a deficient number, since it is larger than the sum of its proper divisors (1).

153494987 is an equidigital number, since it uses as much as digits as its factorization.

153494987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 153494987 is about 12389.3093834967. The cubic root of 153494987 is about 535.4242850846.

The spelling of 153494987 in words is "one hundred fifty-three million, four hundred ninety-four thousand, nine hundred eighty-seven".