55670406 has 32 divisors (see below), whose sum is σ = 122484096. Its totient is φ = 16867400.

The previous prime is 55670371. The next prime is 55670441. The reversal of 55670406 is 60407655.

55670406 = 1226² + 1227² + ... + 1261².

55670406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55670371) and next prime (55670441).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4501 + ... + 11471.

It is an arithmetic number, because the mean of its divisors is an integer number (3827628).

Almost surely, 2^55670406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55670406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61242048).

55670406 is an abundant number, since it is smaller than the sum of its proper divisors (66813690).

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

55670406 is a wasteful number, since it uses less digits than its factorization.

55670406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7009 (or 6987 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 55670406 is about 7461.2603492976. The cubic root of 55670406 is about 381.8341750773.

The spelling of 55670406 in words is "fifty-five million, six hundred seventy thousand, four hundred six".