51159553 has 2 divisors, whose sum is σ = 51159554. Its totient is φ = 51159552.

The previous prime is 51159529. The next prime is 51159557. The reversal of 51159553 is 35595115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50936769 + 222784 = 7137^2 + 472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51159553 is a prime.

It is not a weakly prime, because it can be changed into another prime (51159557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25579776 + 25579777.

It is an arithmetic number, because the mean of its divisors is an integer number (25579777).

Almost surely, 2^51159553 is an apocalyptic number.

It is an amenable number.

51159553 is a deficient number, since it is larger than the sum of its proper divisors (1).

51159553 is an equidigital number, since it uses as much as digits as its factorization.

51159553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16875, while the sum is 34.

The square root of 51159553 is about 7152.5906495479. The cubic root of 51159553 is about 371.2293005423.

The spelling of 51159553 in words is "fifty-one million, one hundred fifty-nine thousand, five hundred fifty-three".