55807422004 has 6 divisors (see below), whose sum is σ = 97662988514. Its totient is φ = 27903711000.

The previous prime is 55807422001. The next prime is 55807422007. The reversal of 55807422004 is 40022470855.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55807422001) and next prime (55807422007).

It can be written as a sum of positive squares in only one way, i.e., 48298852900 + 7508569104 = 219770^2 + 86652^2 .

It is a super-2 number, since 2×55807422004² (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 (55807422001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6975927747 + ... + 6975927754.

Almost surely, 2^55807422004 is an apocalyptic number.

It is an amenable number.

55807422004 is a deficient number, since it is larger than the sum of its proper divisors (41855566510).

55807422004 is a wasteful number, since it uses less digits than its factorization.

55807422004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13951855505 (or 13951855503 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 37.

Adding to 55807422004 its reverse (40022470855), we get a palindrome (95829892859).

The spelling of 55807422004 in words is "fifty-five billion, eight hundred seven million, four hundred twenty-two thousand, four".