51251662 has 16 divisors (see below), whose sum is σ = 95847552. Its totient is φ = 19968120.

The previous prime is 51251647. The next prime is 51251687. The reversal of 51251662 is 26615215.

It is a self number, because there is not a number n which added to its sum of digits gives 51251662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166248 + ... + 166555.

It is an arithmetic number, because the mean of its divisors is an integer number (5990472).

Almost surely, 2^51251662 is an apocalyptic number.

51251662 is a deficient number, since it is larger than the sum of its proper divisors (44595890).

51251662 is a wasteful number, since it uses less digits than its factorization.

51251662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332823.

The product of its digits is 3600, while the sum is 28.

The square root of 51251662 is about 7159.0266098123. The cubic root of 51251662 is about 371.4519572906.

Adding to 51251662 its reverse (26615215), we get a palindrome (77866877).

It can be divided in two parts, 512516 and 62, that added together give a triangular number (512578 = T₁₀₁₂).

The spelling of 51251662 in words is "fifty-one million, two hundred fifty-one thousand, six hundred sixty-two".