51007604 has 6 divisors (see below), whose sum is σ = 89263314. Its totient is φ = 25503800.

The previous prime is 51007577. The next prime is 51007613. The reversal of 51007604 is 40670015.

It can be written as a sum of positive squares in only one way, i.e., 49730704 + 1276900 = 7052^2 + 1130^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51007604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375947 + ... + 6375954.

It is an arithmetic number, because the mean of its divisors is an integer number (14877219).

Almost surely, 2^51007604 is an apocalyptic number.

It is an amenable number.

51007604 is a deficient number, since it is larger than the sum of its proper divisors (38255710).

51007604 is a wasteful number, since it uses less digits than its factorization.

51007604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12751905 (or 12751903 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 51007604 is about 7141.9607951878. The cubic root of 51007604 is about 370.8614066643.

Adding to 51007604 its reverse (40670015), we get a palindrome (91677619).

The spelling of 51007604 in words is "fifty-one million, seven thousand, six hundred four".