147914581 has 2 divisors, whose sum is σ = 147914582. Its totient is φ = 147914580.

The previous prime is 147914537. The next prime is 147914651. The reversal of 147914581 is 185419741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147233956 + 680625 = 12134^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 147914581 - 2¹⁷ = 147783509 is a prime.

It is a super-2 number, since 2×147914581² = 43757446544811122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147914521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73957290 + 73957291.

It is an arithmetic number, because the mean of its divisors is an integer number (73957291).

Almost surely, 2^147914581 is an apocalyptic number.

It is an amenable number.

147914581 is a deficient number, since it is larger than the sum of its proper divisors (1).

147914581 is an equidigital number, since it uses as much as digits as its factorization.

147914581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 40.

The square root of 147914581 is about 12162.0138546213. The cubic root of 147914581 is about 528.8554641739.

The spelling of 147914581 in words is "one hundred forty-seven million, nine hundred fourteen thousand, five hundred eighty-one".