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61232045 = 5717102911
BaseRepresentation
bin1110100110010…
…1001110101101
311021012220120112
43221211032231
5111133411140
610024225405
71342315040
oct351451655
9137186515
1061232045
11316225a6
121860b265
13c8bb9a4
1481bcc57
155597c65
hex3a653ad

61232045 has 16 divisors (see below), whose sum is σ = 88915968. Its totient is φ = 39517440.

The previous prime is 61232027. The next prime is 61232047. The reversal of 61232045 is 54023216.

It is not a de Polignac number, because 61232045 - 26 = 61231981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61232045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61232047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50861 + ... + 52050.

It is an arithmetic number, because the mean of its divisors is an integer number (5557248).

Almost surely, 261232045 is an apocalyptic number.

It is an amenable number.

61232045 is a deficient number, since it is larger than the sum of its proper divisors (27683923).

61232045 is a wasteful number, since it uses less digits than its factorization.

61232045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102940.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 61232045 is about 7825.0907342982. The cubic root of 61232045 is about 394.1482367134.

The spelling of 61232045 in words is "sixty-one million, two hundred thirty-two thousand, forty-five".

Divisors: 1 5 7 17 35 85 119 595 102911 514555 720377 1749487 3601885 8747435 12246409 61232045