72055187 has 2 divisors, whose sum is σ = 72055188. Its totient is φ = 72055186.

The previous prime is 72055171. The next prime is 72055211. The reversal of 72055187 is 78155027.

It is a weak prime.

It is an emirp because it is prime and its reverse (78155027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72055187 - 2⁴ = 72055171 is a prime.

It is not a weakly prime, because it can be changed into another prime (72055127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36027593 + 36027594.

It is an arithmetic number, because the mean of its divisors is an integer number (36027594).

Almost surely, 2^72055187 is an apocalyptic number.

72055187 is a deficient number, since it is larger than the sum of its proper divisors (1).

72055187 is an equidigital number, since it uses as much as digits as its factorization.

72055187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 72055187 is about 8488.5326764995. The cubic root of 72055187 is about 416.1230278226.

It can be divided in two parts, 7205 and 5187, that multiplied together give a triangular number (37372335 = T₈₆₄₅).

The spelling of 72055187 in words is "seventy-two million, fifty-five thousand, one hundred eighty-seven".