73487251 has 2 divisors, whose sum is σ = 73487252. Its totient is φ = 73487250.

The previous prime is 73487237. The next prime is 73487261. The reversal of 73487251 is 15278437.

It is a strong prime.

It is an emirp because it is prime and its reverse (15278437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73487251 - 2²⁵ = 39932819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73487251.

It is not a weakly prime, because it can be changed into another prime (73487221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36743625 + 36743626.

It is an arithmetic number, because the mean of its divisors is an integer number (36743626).

Almost surely, 2^73487251 is an apocalyptic number.

73487251 is a deficient number, since it is larger than the sum of its proper divisors (1).

73487251 is an equidigital number, since it uses as much as digits as its factorization.

73487251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 73487251 is about 8572.4705307163. The cubic root of 73487251 is about 418.8617156156.

The spelling of 73487251 in words is "seventy-three million, four hundred eighty-seven thousand, two hundred fifty-one".