72201487 has 2 divisors, whose sum is σ = 72201488. Its totient is φ = 72201486.

The previous prime is 72201473. The next prime is 72201509. The reversal of 72201487 is 78410227.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72201487 is a prime.

It is a super-2 number, since 2×72201487² = 10426109450022338, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4239913 and since 72201487 and 4239913 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72201407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36100743 + 36100744.

It is an arithmetic number, because the mean of its divisors is an integer number (36100744).

Almost surely, 2^72201487 is an apocalyptic number.

72201487 is a deficient number, since it is larger than the sum of its proper divisors (1).

72201487 is an equidigital number, since it uses as much as digits as its factorization.

72201487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 72201487 is about 8497.1458149193. The cubic root of 72201487 is about 416.4044678567.

The spelling of 72201487 in words is "seventy-two million, two hundred one thousand, four hundred eighty-seven".