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52031961 = 3247123007
BaseRepresentation
bin1100011001111…
…1000111011001
310121220111102200
43012133013121
5101310010321
65055120413
71201156452
oct306370731
9117814380
1052031961
1127409423
1215513109
13aa1a257
146ca6129
15487bd26
hex319f1d9

52031961 has 12 divisors (see below), whose sum is σ = 76756992. Its totient is φ = 33949656.

The previous prime is 52031939. The next prime is 52031977. The reversal of 52031961 is 16913025.

It is not a de Polignac number, because 52031961 - 221 = 49934809 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52031461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61081 + ... + 61926.

It is an arithmetic number, because the mean of its divisors is an integer number (6396416).

Almost surely, 252031961 is an apocalyptic number.

It is an amenable number.

52031961 is a deficient number, since it is larger than the sum of its proper divisors (24725031).

52031961 is a wasteful number, since it uses less digits than its factorization.

52031961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123060 (or 123057 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 52031961 is about 7213.3183071316. The cubic root of 52031961 is about 373.3275710385.

Adding to 52031961 its reverse (16913025), we get a palindrome (68944986).

The spelling of 52031961 in words is "fifty-two million, thirty-one thousand, nine hundred sixty-one".

Divisors: 1 3 9 47 141 423 123007 369021 1107063 5781329 17343987 52031961