51101055604 has 6 divisors (see below), whose sum is σ = 89426847314. Its totient is φ = 25550527800.

The previous prime is 51101055601. The next prime is 51101055611. The reversal of 51101055604 is 40655010115.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 43135136100 + 7965919504 = 207690^2 + 89252^2 .

It is a super-2 number, since 2×51101055604² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51101055601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6387631947 + ... + 6387631954.

Almost surely, 2^51101055604 is an apocalyptic number.

It is an amenable number.

51101055604 is a deficient number, since it is larger than the sum of its proper divisors (38325791710).

51101055604 is a wasteful number, since it uses less digits than its factorization.

51101055604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12775263905 (or 12775263903 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 51101055604 its reverse (40655010115), we get a palindrome (91756065719).

The spelling of 51101055604 in words is "fifty-one billion, one hundred one million, fifty-five thousand, six hundred four".