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12492501 = 372174999
BaseRepresentation
bin101111101001…
…111011010101
3212111200111020
4233221323111
511144230001
61123431353
7211120200
oct57517325
925450436
1012492501
11706288a
124225559
132785218
141932937
15116b736
hexbe9ed5

12492501 has 24 divisors (see below), whose sum is σ = 20520000. Its totient is φ = 6717312.

The previous prime is 12492499. The next prime is 12492509. The reversal of 12492501 is 10529421.

12492501 is a nontrivial binomial coefficient, being equal to C(4999, 2).

It is not a de Polignac number, because 12492501 - 21 = 12492499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12492509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1 + ... + 4998.

It is an arithmetic number, because the mean of its divisors is an integer number (855000).

Almost surely, 212492501 is an apocalyptic number.

12492501 is the 4998-th triangular number.

It is an amenable number.

12492501 is a deficient number, since it is larger than the sum of its proper divisors (8027499).

12492501 is a wasteful number, since it uses less digits than its factorization.

12492501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033 (or 5026 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 12492501 is about 3534.4732280780. The cubic root of 12492501 is about 232.0330226973.

The spelling of 12492501 in words is "twelve million, four hundred ninety-two thousand, five hundred one".

Divisors: 1 3 7 17 21 49 51 119 147 357 833 2499 4999 14997 34993 84983 104979 244951 254949 594881 734853 1784643 4164167 12492501