51380351 has 12 divisors (see below), whose sum is σ = 59451000. Its totient is φ = 44249040.

The previous prime is 51380347. The next prime is 51380359. The reversal of 51380351 is 15308315.

It is not a de Polignac number, because 51380351 - 2² = 51380347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51380351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51380359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8876 + ... + 13473.

It is an arithmetic number, because the mean of its divisors is an integer number (4954250).

Almost surely, 2^51380351 is an apocalyptic number.

51380351 is a deficient number, since it is larger than the sum of its proper divisors (8070649).

51380351 is a wasteful number, since it uses less digits than its factorization.

51380351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22390 (or 22379 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 51380351 is about 7168.0088588115. The cubic root of 51380351 is about 371.7625932512.

Adding to 51380351 its reverse (15308315), we get a palindrome (66688666).

Subtracting from 51380351 its reverse (15308315), we obtain a square (36072036 = 6006²).

The spelling of 51380351 in words is "fifty-one million, three hundred eighty thousand, three hundred fifty-one".