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97980253 = 722386939
BaseRepresentation
bin1011101011100…
…00111101011101
320211100220122021
411311300331131
5200040332003
613420020141
72266550500
oct565607535
9224326567
1097980253
1150342018
1228991651
13173b73a7
14d027137
1589062bd
hex5d70f5d

97980253 has 12 divisors (see below), whose sum is σ = 118933920. Its totient is φ = 80330712.

The previous prime is 97980229. The next prime is 97980257. The reversal of 97980253 is 35208979.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-97980253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97980257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42343 + ... + 44596.

It is an arithmetic number, because the mean of its divisors is an integer number (9911160).

Almost surely, 297980253 is an apocalyptic number.

It is an amenable number.

97980253 is a deficient number, since it is larger than the sum of its proper divisors (20953667).

97980253 is a wasteful number, since it uses less digits than its factorization.

97980253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86976 (or 86969 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 97980253 is about 9898.4975122490. The cubic root of 97980253 is about 461.0126603619.

The spelling of 97980253 in words is "ninety-seven million, nine hundred eighty thousand, two hundred fifty-three".

Divisors: 1 7 23 49 161 1127 86939 608573 1999597 4260011 13997179 97980253