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61972325 = 5212292017
BaseRepresentation
bin1110110001100…
…1111101100101
311022121112001022
43230121331211
5111331103300
610052140525
71351520222
oct354317545
9138545038
1061972325
1131a887a8
1218907745
13caba91c
148332949
155692285
hex3b19f65

61972325 has 12 divisors (see below), whose sum is σ = 76946340. Its totient is φ = 49512960.

The previous prime is 61972303. The next prime is 61972439. The reversal of 61972325 is 52327916.

It can be written as a sum of positive squares in 6 ways, for example, as 8726116 + 53246209 = 2954^2 + 7297^2 .

It is not a de Polignac number, because 61972325 - 220 = 60923749 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29717 + ... + 31733.

It is an arithmetic number, because the mean of its divisors is an integer number (6412195).

Almost surely, 261972325 is an apocalyptic number.

It is an amenable number.

61972325 is a deficient number, since it is larger than the sum of its proper divisors (14974015).

61972325 is a wasteful number, since it uses less digits than its factorization.

61972325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256 (or 3251 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 61972325 is about 7872.2503136016. The cubic root of 61972325 is about 395.7302626067.

The spelling of 61972325 in words is "sixty-one million, nine hundred seventy-two thousand, three hundred twenty-five".

Divisors: 1 5 25 1229 2017 6145 10085 30725 50425 2478893 12394465 61972325