147117551 has 24 divisors (see below), whose sum is σ = 186390000. Its totient is φ = 115323264.

The previous prime is 147117533. The next prime is 147117563. The reversal of 147117551 is 155711741.

It is not a de Polignac number, because 147117551 - 2¹⁰ = 147116527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147117521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24275 + ... + 29723.

It is an arithmetic number, because the mean of its divisors is an integer number (7766250).

Almost surely, 2^147117551 is an apocalyptic number.

147117551 is a deficient number, since it is larger than the sum of its proper divisors (39272449).

147117551 is a wasteful number, since it uses less digits than its factorization.

147117551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511 (or 5504 counting only the distinct ones).

The product of its digits is 4900, while the sum is 32.

The square root of 147117551 is about 12129.2024057644. The cubic root of 147117551 is about 527.9038495238.

The spelling of 147117551 in words is "one hundred forty-seven million, one hundred seventeen thousand, five hundred fifty-one".