55431634 has 4 divisors (see below), whose sum is σ = 83147454. Its totient is φ = 27715816.

The previous prime is 55431619. The next prime is 55431637. The reversal of 55431634 is 43613455.

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

It can be written as a sum of positive squares in only one way, i.e., 34774609 + 20657025 = 5897^2 + 4545^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55431596 and 55431605.

It is not an unprimeable number, because it can be changed into a prime (55431637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13857907 + ... + 13857910.

Almost surely, 2^55431634 is an apocalyptic number.

55431634 is a deficient number, since it is larger than the sum of its proper divisors (27715820).

55431634 is a wasteful number, since it uses less digits than its factorization.

55431634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27715819.

The product of its digits is 21600, while the sum is 31.

The square root of 55431634 is about 7445.2423734893. The cubic root of 55431634 is about 381.2874934371.

It can be divided in two parts, 55431 and 634, that added together give a palindrome (56065).

The spelling of 55431634 in words is "fifty-five million, four hundred thirty-one thousand, six hundred thirty-four".