55009630 has 32 divisors (see below), whose sum is σ = 107017344. Its totient is φ = 20238336.

The previous prime is 55009627. The next prime is 55009631. The reversal of 55009630 is 3690055.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55009631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47134 + ... + 48286.

It is an arithmetic number, because the mean of its divisors is an integer number (3344292).

Almost surely, 2^55009630 is an apocalyptic number.

55009630 is a deficient number, since it is larger than the sum of its proper divisors (52007714).

55009630 is a wasteful number, since it uses less digits than its factorization.

55009630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 55009630 is about 7416.8477131461. The cubic root of 55009630 is about 380.3174401943.

Adding to 55009630 its reverse (3690055), we get a palindrome (58699685).

The spelling of 55009630 in words is "fifty-five million, nine thousand, six hundred thirty".