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715552421 is a prime number
BaseRepresentation
bin101010101001100…
…111011010100101
31211212102211101112
4222221213122211
52431140134141
6155000434405
723506044443
oct5251473245
91755384345
10715552421
11337a02141
1217b778a05
13b53262cc
146b065b93
1542c457eb
hex2aa676a5

715552421 has 2 divisors, whose sum is σ = 715552422. Its totient is φ = 715552420.

The previous prime is 715552391. The next prime is 715552427. The reversal of 715552421 is 124255517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 679384225 + 36168196 = 26065^2 + 6014^2 .

It is a cyclic number.

It is not a de Polignac number, because 715552421 - 226 = 648443557 is a prime.

It is a super-2 number, since 2×7155524212 = 1024030534397922482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (715552427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357776210 + 357776211.

It is an arithmetic number, because the mean of its divisors is an integer number (357776211).

Almost surely, 2715552421 is an apocalyptic number.

It is an amenable number.

715552421 is a deficient number, since it is larger than the sum of its proper divisors (1).

715552421 is an equidigital number, since it uses as much as digits as its factorization.

715552421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14000, while the sum is 32.

The square root of 715552421 is about 26749.8116068132. The cubic root of 715552421 is about 894.4316360612.

The spelling of 715552421 in words is "seven hundred fifteen million, five hundred fifty-two thousand, four hundred twenty-one".