55046421 has 12 divisors (see below), whose sum is σ = 82076800. Its totient is φ = 35513640.

The previous prime is 55046419. The next prime is 55046423. The reversal of 55046421 is 12464055.

It is an interprime number because it is at equal distance from previous prime (55046419) and next prime (55046423).

It is not a de Polignac number, because 55046421 - 2¹ = 55046419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55046423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98371 + ... + 98928.

Almost surely, 2^55046421 is an apocalyptic number.

It is an amenable number.

55046421 is a deficient number, since it is larger than the sum of its proper divisors (27030379).

55046421 is a wasteful number, since it uses less digits than its factorization.

55046421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197336 (or 197333 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 55046421 is about 7419.3275301741. The cubic root of 55046421 is about 380.4022080232.

It can be divided in two parts, 550 and 46421, that added together give a triangular number (46971 = T₃₀₆).

The spelling of 55046421 in words is "fifty-five million, forty-six thousand, four hundred twenty-one".