7055421 has 8 divisors (see below), whose sum is σ = 9444864. Its totient is φ = 4684800.

The previous prime is 7055407. The next prime is 7055429. The reversal of 7055421 is 1245507.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7055421 - 2¹⁷ = 6924349 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7055391 and 7055400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7055429) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3805 + ... + 5346.

It is an arithmetic number, because the mean of its divisors is an integer number (1180608).

Almost surely, 2^7055421 is an apocalyptic number.

It is an amenable number.

7055421 is a deficient number, since it is larger than the sum of its proper divisors (2389443).

7055421 is a wasteful number, since it uses less digits than its factorization.

7055421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9411.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 7055421 is about 2656.2042466648. The cubic root of 7055421 is about 191.7966325414.

The spelling of 7055421 in words is "seven million, fifty-five thousand, four hundred twenty-one".