51672589 has 2 divisors, whose sum is σ = 51672590. Its totient is φ = 51672588.

The previous prime is 51672581. The next prime is 51672619. The reversal of 51672589 is 98527615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29975625 + 21696964 = 5475^2 + 4658^2 .

It is a cyclic number.

It is not a de Polignac number, because 51672589 - 2³ = 51672581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51672581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25836294 + 25836295.

It is an arithmetic number, because the mean of its divisors is an integer number (25836295).

Almost surely, 2^51672589 is an apocalyptic number.

It is an amenable number.

51672589 is a deficient number, since it is larger than the sum of its proper divisors (1).

51672589 is an equidigital number, since it uses as much as digits as its factorization.

51672589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 43.

The square root of 51672589 is about 7188.3648349260. The cubic root of 51672589 is about 372.4660906328.

The spelling of 51672589 in words is "fifty-one million, six hundred seventy-two thousand, five hundred eighty-nine".