Search a number
-
+
52472831 = 229229139
BaseRepresentation
bin1100100000101…
…0101111111111
310122201220012012
43020022233333
5101413112311
65112401435
71205004005
oct310125777
9118656165
1052472831
112768a684
12156a627b
13ab42b18
146d7ca75
15491778b
hex320abff

52472831 has 4 divisors (see below), whose sum is σ = 52702200. Its totient is φ = 52243464.

The previous prime is 52472807. The next prime is 52472837. The reversal of 52472831 is 13827425.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52472831 - 26 = 52472767 is a prime.

It is a super-2 number, since 2×524728312 = 5506795986309122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52472837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114341 + ... + 114798.

It is an arithmetic number, because the mean of its divisors is an integer number (13175550).

Almost surely, 252472831 is an apocalyptic number.

52472831 is a deficient number, since it is larger than the sum of its proper divisors (229369).

52472831 is a wasteful number, since it uses less digits than its factorization.

52472831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229368.

The product of its digits is 13440, while the sum is 32.

The square root of 52472831 is about 7243.8132913542. The cubic root of 52472831 is about 374.3790160968.

The spelling of 52472831 in words is "fifty-two million, four hundred seventy-two thousand, eight hundred thirty-one".

Divisors: 1 229 229139 52472831