149977001 has 2 divisors, whose sum is σ = 149977002. Its totient is φ = 149977000.

The previous prime is 149976989. The next prime is 149977027. The reversal of 149977001 is 100779941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75672601 + 74304400 = 8699^2 + 8620^2 .

It is an emirp because it is prime and its reverse (100779941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149977001 - 2¹⁸ = 149714857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (149977081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74988500 + 74988501.

It is an arithmetic number, because the mean of its divisors is an integer number (74988501).

Almost surely, 2^149977001 is an apocalyptic number.

It is an amenable number.

149977001 is a deficient number, since it is larger than the sum of its proper divisors (1).

149977001 is an equidigital number, since it uses as much as digits as its factorization.

149977001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 149977001 is about 12246.5097476791. The cubic root of 149977001 is about 531.3021275539.

The spelling of 149977001 in words is "one hundred forty-nine million, nine hundred seventy-seven thousand, one".