149127551 has 2 divisors, whose sum is σ = 149127552. Its totient is φ = 149127550.

The previous prime is 149127527. The next prime is 149127571. The reversal of 149127551 is 155721941.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (155721941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149127551 - 2⁶ = 149127487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149127571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74563775 + 74563776.

It is an arithmetic number, because the mean of its divisors is an integer number (74563776).

Almost surely, 2^149127551 is an apocalyptic number.

149127551 is a deficient number, since it is larger than the sum of its proper divisors (1).

149127551 is an equidigital number, since it uses as much as digits as its factorization.

149127551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 35.

The square root of 149127551 is about 12211.7791906012. The cubic root of 149127551 is about 530.2971526963.

The spelling of 149127551 in words is "one hundred forty-nine million, one hundred twenty-seven thousand, five hundred fifty-one".