149148551 has 2 divisors, whose sum is σ = 149148552. Its totient is φ = 149148550.

The previous prime is 149148547. The next prime is 149148631. The reversal of 149148551 is 155841941.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149148551 - 2² = 149148547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149148451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74574275 + 74574276.

It is an arithmetic number, because the mean of its divisors is an integer number (74574276).

Almost surely, 2^149148551 is an apocalyptic number.

149148551 is a deficient number, since it is larger than the sum of its proper divisors (1).

149148551 is an equidigital number, since it uses as much as digits as its factorization.

149148551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 38.

The square root of 149148551 is about 12212.6389859031. The cubic root of 149148551 is about 530.3220435083.

The spelling of 149148551 in words is "one hundred forty-nine million, one hundred forty-eight thousand, five hundred fifty-one".