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52113961 = 72192
BaseRepresentation
bin1100011011001…
…1001000101001
310122001122220201
43012303020221
5101320121321
65100552201
71201650514
oct306631051
9118048821
1052113961
1127464a99
1215552661
13aa48683
146cc7d7b
154896291
hex31b3229

52113961 has 3 divisors (see below), whose sum is σ = 52121181. Its totient is φ = 52106742.

The previous prime is 52113953. The next prime is 52113973. The reversal of 52113961 is 16931125.

The square root of 52113961 is 7219.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 52113961 - 23 = 52113953 is a prime.

It is a super-2 number, since 2×521139612 = 5431729862219042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52513961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3610 + ... + 10828.

It is an arithmetic number, because the mean of its divisors is an integer number (17373727).

Almost surely, 252113961 is an apocalyptic number.

52113961 is the 7219-th square number.

52113961 is the 3610-th centered octagonal number.

It is an amenable number.

52113961 is a deficient number, since it is larger than the sum of its proper divisors (7220).

52113961 is an frugal number, since it uses more digits than its factorization.

52113961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14438 (or 7219 counting only the distinct ones).

The product of its digits is 1620, while the sum is 28.

The cubic root of 52113961 is about 373.5235838532.

The spelling of 52113961 in words is "fifty-two million, one hundred thirteen thousand, nine hundred sixty-one".

Divisors: 1 7219 52113961