55400134 has 4 divisors (see below), whose sum is σ = 83100204. Its totient is φ = 27700066.

The previous prime is 55400129. The next prime is 55400141. The reversal of 55400134 is 43100455.

It is a semiprime because it is the product of two primes.

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, 13850032 + ... + 13850035.

It is an arithmetic number, because the mean of its divisors is an integer number (20775051).

Almost surely, 2^55400134 is an apocalyptic number.

55400134 is a deficient number, since it is larger than the sum of its proper divisors (27700070).

55400134 is a wasteful number, since it uses less digits than its factorization.

55400134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27700069.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55400134 is about 7443.1266279703. The cubic root of 55400134 is about 381.2152553126.

Adding to 55400134 its reverse (43100455), we get a palindrome (98500589).

The spelling of 55400134 in words is "fifty-five million, four hundred thousand, one hundred thirty-four".