149401751 has 2 divisors, whose sum is σ = 149401752. Its totient is φ = 149401750.

The previous prime is 149401739. The next prime is 149401771. The reversal of 149401751 is 157104941.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149401751 - 2¹⁴ = 149385367 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149401711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74700875 + 74700876.

It is an arithmetic number, because the mean of its divisors is an integer number (74700876).

Almost surely, 2^149401751 is an apocalyptic number.

149401751 is a deficient number, since it is larger than the sum of its proper divisors (1).

149401751 is an equidigital number, since it uses as much as digits as its factorization.

149401751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 149401751 is about 12223.0008999427. Note that the first 3 decimals coincide. The cubic root of 149401751 is about 530.6219718400.

The spelling of 149401751 in words is "one hundred forty-nine million, four hundred one thousand, seven hundred fifty-one".