51433549 has 2 divisors, whose sum is σ = 51433550. Its totient is φ = 51433548.

The previous prime is 51433541. The next prime is 51433601. The reversal of 51433549 is 94533415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51408900 + 24649 = 7170^2 + 157^2 .

It is a cyclic number.

It is not a de Polignac number, because 51433549 - 2³ = 51433541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51433541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25716774 + 25716775.

It is an arithmetic number, because the mean of its divisors is an integer number (25716775).

Almost surely, 2^51433549 is an apocalyptic number.

It is an amenable number.

51433549 is a deficient number, since it is larger than the sum of its proper divisors (1).

51433549 is an equidigital number, since it uses as much as digits as its factorization.

51433549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 34.

The square root of 51433549 is about 7171.7186921965. The cubic root of 51433549 is about 371.8908537271.

The spelling of 51433549 in words is "fifty-one million, four hundred thirty-three thousand, five hundred forty-nine".