153349961 has 2 divisors, whose sum is σ = 153349962. Its totient is φ = 153349960.

The previous prime is 153349951. The next prime is 153350003. The reversal of 153349961 is 169943351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102313225 + 51036736 = 10115^2 + 7144^2 .

It is an emirp because it is prime and its reverse (169943351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 153349961 - 2¹⁸ = 153087817 is a prime.

It is not a weakly prime, because it can be changed into another prime (153349951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76674980 + 76674981.

It is an arithmetic number, because the mean of its divisors is an integer number (76674981).

Almost surely, 2^153349961 is an apocalyptic number.

It is an amenable number.

153349961 is a deficient number, since it is larger than the sum of its proper divisors (1).

153349961 is an equidigital number, since it uses as much as digits as its factorization.

153349961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 41.

The square root of 153349961 is about 12383.4551317474. The cubic root of 153349961 is about 535.2556044171.

The spelling of 153349961 in words is "one hundred fifty-three million, three hundred forty-nine thousand, nine hundred sixty-one".