247975473 has 8 divisors (see below), whose sum is σ = 331444000. Its totient is φ = 164911968.

The previous prime is 247975463. The next prime is 247975477. The reversal of 247975473 is 374579742.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 247975473 - 2⁴ = 247975457 is a prime.

It is a super-2 number, since 2×247975473² = 122983670419147458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247975477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99823 + ... + 102276.

It is an arithmetic number, because the mean of its divisors is an integer number (41430500).

Almost surely, 2^247975473 is an apocalyptic number.

It is an amenable number.

247975473 is a deficient number, since it is larger than the sum of its proper divisors (83468527).

247975473 is a wasteful number, since it uses less digits than its factorization.

247975473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202511.

The product of its digits is 1481760, while the sum is 48.

The square root of 247975473 is about 15747.2369957399. The cubic root of 247975473 is about 628.2554177946.

The spelling of 247975473 in words is "two hundred forty-seven million, nine hundred seventy-five thousand, four hundred seventy-three".