55001430 has 80 divisors (see below), whose sum is σ = 161363664. Its totient is φ = 13331520.

The previous prime is 55001423. The next prime is 55001431. The reversal of 55001430 is 3410055.

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 (55001431) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5824 + ... + 11996.

Almost surely, 2^55001430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55001430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80681832).

55001430 is an abundant number, since it is smaller than the sum of its proper divisors (106362234).

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

55001430 is a wasteful number, since it uses less digits than its factorization.

55001430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6203 (or 6194 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 55001430 is about 7416.2948970493. The cubic root of 55001430 is about 380.2985419397.

Adding to 55001430 its reverse (3410055), we get a palindrome (58411485).

The spelling of 55001430 in words is "fifty-five million, one thousand, four hundred thirty".