55100412 has 30 divisors (see below), whose sum is σ = 144044208. Its totient is φ = 18366696.

The previous prime is 55100411. The next prime is 55100413. The reversal of 55100412 is 21400155.

It is an interprime number because it is at equal distance from previous prime (55100411) and next prime (55100413).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55100411) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 84708 + ... + 85355.

Almost surely, 2^55100412 is an apocalyptic number.

It is an amenable number.

55100412 is an abundant number, since it is smaller than the sum of its proper divisors (88943796).

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

55100412 is a wasteful number, since it uses less digits than its factorization.

55100412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170079 (or 170068 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 55100412 is about 7422.9651757232. The cubic root of 55100412 is about 380.5265369324.

Adding to 55100412 its reverse (21400155), we get a palindrome (76500567).

The spelling of 55100412 in words is "fifty-five million, one hundred thousand, four hundred twelve".