72102851 has 2 divisors, whose sum is σ = 72102852. Its totient is φ = 72102850.

The previous prime is 72102839. The next prime is 72102871. The reversal of 72102851 is 15820127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72102851 - 2¹⁴ = 72086467 is a prime.

It is a super-2 number, since 2×72102851² = 10397642244656402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72102851.

It is not a weakly prime, because it can be changed into another prime (72102871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36051425 + 36051426.

It is an arithmetic number, because the mean of its divisors is an integer number (36051426).

Almost surely, 2^72102851 is an apocalyptic number.

72102851 is a deficient number, since it is larger than the sum of its proper divisors (1).

72102851 is an equidigital number, since it uses as much as digits as its factorization.

72102851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 72102851 is about 8491.3397647250. The cubic root of 72102851 is about 416.2147617516.

Adding to 72102851 its reverse (15820127), we get a palindrome (87922978).

The spelling of 72102851 in words is "seventy-two million, one hundred two thousand, eight hundred fifty-one".