51135607 has 2 divisors, whose sum is σ = 51135608. Its totient is φ = 51135606.

The previous prime is 51135599. The next prime is 51135611. The reversal of 51135607 is 70653115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51135607 - 2³ = 51135599 is a prime.

It is a super-2 number, since 2×51135607² = 5229700606516898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51135307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25567803 + 25567804.

It is an arithmetic number, because the mean of its divisors is an integer number (25567804).

Almost surely, 2^51135607 is an apocalyptic number.

51135607 is a deficient number, since it is larger than the sum of its proper divisors (1).

51135607 is an equidigital number, since it uses as much as digits as its factorization.

51135607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 51135607 is about 7150.9165146854. The cubic root of 51135607 is about 371.1713716797.

The spelling of 51135607 in words is "fifty-one million, one hundred thirty-five thousand, six hundred seven".