147493557 has 12 divisors (see below), whose sum is σ = 213377164. Its totient is φ = 98176320.

The previous prime is 147493529. The next prime is 147493571. The reversal of 147493557 is 755394741.

147493557 is a `hidden beast` number, since 1 + 4 + 7 + 4 + 93 + 557 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 133610481 + 13883076 = 11559^2 + 3726^2 .

It is not a de Polignac number, because 147493557 - 2⁸ = 147493301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147493517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6448 + ... + 18345.

Almost surely, 2^147493557 is an apocalyptic number.

It is an amenable number.

147493557 is a deficient number, since it is larger than the sum of its proper divisors (65883607).

147493557 is a wasteful number, since it uses less digits than its factorization.

147493557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25460 (or 25457 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 147493557 is about 12144.6925444821. The cubic root of 147493557 is about 528.3532093438.

The spelling of 147493557 in words is "one hundred forty-seven million, four hundred ninety-three thousand, five hundred fifty-seven".