51226604 has 54 divisors (see below), whose sum is σ = 107188956. Its totient is φ = 21234720.

The previous prime is 51226579. The next prime is 51226607. The reversal of 51226604 is 40662215.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (51226607) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 617147 + ... + 617229.

Almost surely, 2^51226604 is an apocalyptic number.

It is an amenable number.

51226604 is an abundant number, since it is smaller than the sum of its proper divisors (55962352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51226604 is a wasteful number, since it uses less digits than its factorization.

51226604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 51226604 is about 7157.2762975870. The cubic root of 51226604 is about 371.3914105680.

Adding to 51226604 its reverse (40662215), we get a palindrome (91888819).

The spelling of 51226604 in words is "fifty-one million, two hundred twenty-six thousand, six hundred four".