51225602 has 4 divisors (see below), whose sum is σ = 76838406. Its totient is φ = 25612800.

The previous prime is 51225583. The next prime is 51225611. The reversal of 51225602 is 20652215.

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

It can be written as a sum of positive squares in only one way, i.e., 50708641 + 516961 = 7121^2 + 719^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12806399 + ... + 12806402.

Almost surely, 2^51225602 is an apocalyptic number.

51225602 is a deficient number, since it is larger than the sum of its proper divisors (25612804).

51225602 is a wasteful number, since it uses less digits than its factorization.

51225602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25612803.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51225602 is about 7157.2062985497. The cubic root of 51225602 is about 371.3889890617.

Adding to 51225602 its reverse (20652215), we get a palindrome (71877817).

The spelling of 51225602 in words is "fifty-one million, two hundred twenty-five thousand, six hundred two".