55007406 has 24 divisors (see below), whose sum is σ = 121956120. Its totient is φ = 17909136.

The previous prime is 55007399. The next prime is 55007431. The reversal of 55007406 is 60470055.

It is a self number, because there is not a number n which added to its sum of digits gives 55007406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34761 + ... + 36308.

It is an arithmetic number, because the mean of its divisors is an integer number (5081505).

Almost surely, 2^55007406 is an apocalyptic number.

55007406 is an abundant number, since it is smaller than the sum of its proper divisors (66948714).

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

55007406 is a wasteful number, since it uses less digits than its factorization.

55007406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71120 (or 71117 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55007406 is about 7416.6977827063. The cubic root of 55007406 is about 380.3123148045.

The spelling of 55007406 in words is "fifty-five million, seven thousand, four hundred six".