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47252997 = 3311389409
BaseRepresentation
bin1011010001000…
…0011000000101
310021220200221000
42310100120011
544044043442
64404443513
71112433561
oct264203005
9107820830
1047252997
1124744970
12139a9599
139a35c6c
1463c06a1
154235d4c
hex2d10605

47252997 has 32 divisors (see below), whose sum is σ = 76752000. Its totient is φ = 28494720.

The previous prime is 47252993. The next prime is 47252999. The reversal of 47252997 is 79925274.

It is not a de Polignac number, because 47252997 - 22 = 47252993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47252993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115329 + ... + 115737.

It is an arithmetic number, because the mean of its divisors is an integer number (2398500).

Almost surely, 247252997 is an apocalyptic number.

It is an amenable number.

47252997 is a deficient number, since it is larger than the sum of its proper divisors (29499003).

47252997 is a wasteful number, since it uses less digits than its factorization.

47252997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 812 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 47252997 is about 6874.0815386494. The cubic root of 47252997 is about 361.5289830587.

The spelling of 47252997 in words is "forty-seven million, two hundred fifty-two thousand, nine hundred ninety-seven".

Divisors: 1 3 9 11 27 33 99 297 389 409 1167 1227 3501 3681 4279 4499 10503 11043 12837 13497 38511 40491 115533 121473 159101 477303 1431909 1750111 4295727 5250333 15750999 47252997