55025406 has 96 divisors (see below), whose sum is σ = 133660800. Its totient is φ = 16912800.

The previous prime is 55025393. The next prime is 55025419. The reversal of 55025406 is 60452055.

It is an interprime number because it is at equal distance from previous prime (55025393) and next prime (55025419).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 55025406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 544756 + ... + 544856.

It is an arithmetic number, because the mean of its divisors is an integer number (1392300).

Almost surely, 2^55025406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55025406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66830400).

55025406 is an abundant number, since it is smaller than the sum of its proper divisors (78635394).

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

55025406 is a wasteful number, since it uses less digits than its factorization.

55025406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 55025406 is about 7417.9111615063. The cubic root of 55025406 is about 380.3537933108.

The spelling of 55025406 in words is "fifty-five million, twenty-five thousand, four hundred six".