149253757 has 2 divisors, whose sum is σ = 149253758. Its totient is φ = 149253756.

The previous prime is 149253733. The next prime is 149253773. The reversal of 149253757 is 757352941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148498596 + 755161 = 12186^2 + 869^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149253757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149253707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74626878 + 74626879.

It is an arithmetic number, because the mean of its divisors is an integer number (74626879).

Almost surely, 2^149253757 is an apocalyptic number.

It is an amenable number.

149253757 is a deficient number, since it is larger than the sum of its proper divisors (1).

149253757 is an equidigital number, since it uses as much as digits as its factorization.

149253757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 43.

The square root of 149253757 is about 12216.9454856769. The cubic root of 149253757 is about 530.4467065759.

The spelling of 149253757 in words is "one hundred forty-nine million, two hundred fifty-three thousand, seven hundred fifty-seven".