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72424453 is a prime number
BaseRepresentation
bin1000101000100…
…01110000000101
312001021112200011
410110101300011
5122020040303
611104150221
71536412003
oct424216005
9161245604
1072424453
1137977622
1220308371
131200a20a
149893a73
15655916d
hex4511c05

72424453 has 2 divisors, whose sum is σ = 72424454. Its totient is φ = 72424452.

The previous prime is 72424439. The next prime is 72424459. The reversal of 72424453 is 35442427.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67125249 + 5299204 = 8193^2 + 2302^2 .

It is a cyclic number.

It is not a de Polignac number, because 72424453 - 225 = 38870021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72424459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36212226 + 36212227.

It is an arithmetic number, because the mean of its divisors is an integer number (36212227).

Almost surely, 272424453 is an apocalyptic number.

It is an amenable number.

72424453 is a deficient number, since it is larger than the sum of its proper divisors (1).

72424453 is an equidigital number, since it uses as much as digits as its factorization.

72424453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 31.

The square root of 72424453 is about 8510.2557540887. The cubic root of 72424453 is about 416.8326613988.

The spelling of 72424453 in words is "seventy-two million, four hundred twenty-four thousand, four hundred fifty-three".