51151263 has 4 divisors (see below), whose sum is σ = 68201688. Its totient is φ = 34100840.

The previous prime is 51151229. The next prime is 51151297. The reversal of 51151263 is 36215115.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51151229) and next prime (51151297).

It is a cyclic number.

It is not a de Polignac number, because 51151263 - 2⁸ = 51151007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51151223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8525208 + ... + 8525213.

It is an arithmetic number, because the mean of its divisors is an integer number (17050422).

Almost surely, 2^51151263 is an apocalyptic number.

51151263 is a deficient number, since it is larger than the sum of its proper divisors (17050425).

51151263 is a wasteful number, since it uses less digits than its factorization.

51151263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17050424.

The product of its digits is 900, while the sum is 24.

The square root of 51151263 is about 7152.0111157632. The cubic root of 51151263 is about 371.2092478707.

Adding to 51151263 its reverse (36215115), we get a palindrome (87366378).

The spelling of 51151263 in words is "fifty-one million, one hundred fifty-one thousand, two hundred sixty-three".