147971507 has 2 divisors, whose sum is σ = 147971508. Its totient is φ = 147971506.

The previous prime is 147971497. The next prime is 147971513. The reversal of 147971507 is 705179741.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 147971507 - 2⁴ = 147971491 is a prime.

It is not a weakly prime, because it can be changed into another prime (147971567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73985753 + 73985754.

It is an arithmetic number, because the mean of its divisors is an integer number (73985754).

Almost surely, 2^147971507 is an apocalyptic number.

147971507 is a deficient number, since it is larger than the sum of its proper divisors (1).

147971507 is an equidigital number, since it uses as much as digits as its factorization.

147971507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 41.

The square root of 147971507 is about 12164.3539491417. The cubic root of 147971507 is about 528.9233000934.

The spelling of 147971507 in words is "one hundred forty-seven million, nine hundred seventy-one thousand, five hundred seven".