51064263 has 36 divisors (see below), whose sum is σ = 78806728. Its totient is φ = 33067440.

The previous prime is 51064249. The next prime is 51064297. The reversal of 51064263 is 36246015.

51064263 is a `hidden beast` number, since 5 + 10 + 642 + 6 + 3 = 666.

It is not a de Polignac number, because 51064263 - 2⁶ = 51064199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51064213) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 282033 + ... + 282213.

Almost surely, 2^51064263 is an apocalyptic number.

51064263 is a deficient number, since it is larger than the sum of its proper divisors (27742465).

51064263 is an frugal number, since it uses more digits than its factorization.

51064263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 51064263 is about 7145.9263220383. The cubic root of 51064263 is about 370.9986728713.

The spelling of 51064263 in words is "fifty-one million, sixty-four thousand, two hundred sixty-three".