55511275400 has 48 divisors (see below), whose sum is σ = 147501392640. Its totient is φ = 19032436800.

The previous prime is 55511275321. The next prime is 55511275411. The reversal of 55511275400 is 457211555.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19824056 + ... + 19826855.

It is an arithmetic number, because the mean of its divisors is an integer number (3072945680).

Almost surely, 2^55511275400 is an apocalyptic number.

55511275400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55511275400 is an abundant number, since it is smaller than the sum of its proper divisors (91990117240).

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

55511275400 is a wasteful number, since it uses less digits than its factorization.

55511275400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39650934 (or 39650925 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 35.

Adding to 55511275400 its reverse (457211555), we get a palindrome (55968486955).

The spelling of 55511275400 in words is "fifty-five billion, five hundred eleven million, two hundred seventy-five thousand, four hundred".