149553071 has 2 divisors, whose sum is σ = 149553072. Its totient is φ = 149553070.

The previous prime is 149553067. The next prime is 149553073. The reversal of 149553071 is 170355941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149553071 - 2² = 149553067 is a prime.

It is a super-2 number, since 2×149553071² = 44732242091062082, which contains 22 as substring.

Together with 149553073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149553073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74776535 + 74776536.

It is an arithmetic number, because the mean of its divisors is an integer number (74776536).

Almost surely, 2^149553071 is an apocalyptic number.

149553071 is a deficient number, since it is larger than the sum of its proper divisors (1).

149553071 is an equidigital number, since it uses as much as digits as its factorization.

149553071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 149553071 is about 12229.1893026480. The cubic root of 149553071 is about 530.8010563627.

The spelling of 149553071 in words is "one hundred forty-nine million, five hundred fifty-three thousand, seventy-one".