55673021 has 4 divisors (see below), whose sum is σ = 58603200. Its totient is φ = 52742844.

The previous prime is 55672987. The next prime is 55673029. The reversal of 55673021 is 12037655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55673021 - 2¹⁸ = 55410877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55673029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465061 + ... + 1465098.

It is an arithmetic number, because the mean of its divisors is an integer number (14650800).

Almost surely, 2^55673021 is an apocalyptic number.

It is an amenable number.

55673021 is a deficient number, since it is larger than the sum of its proper divisors (2930179).

55673021 is a wasteful number, since it uses less digits than its factorization.

55673021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930178.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 55673021 is about 7461.4355857301. The cubic root of 55673021 is about 381.8401536023.

The spelling of 55673021 in words is "fifty-five million, six hundred seventy-three thousand, twenty-one".