55227421537 has 4 divisors (see below), whose sum is σ = 57008951296. Its totient is φ = 53445891780.

The previous prime is 55227421471. The next prime is 55227421573. The reversal of 55227421537 is 73512472255.

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 55227421537 - 2⁷ = 55227421409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55227421493 and 55227421502.

It is not an unprimeable number, because it can be changed into a prime (55227481537) 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, 890764833 + ... + 890764894.

It is an arithmetic number, because the mean of its divisors is an integer number (14252237824).

Almost surely, 2^55227421537 is an apocalyptic number.

It is an amenable number.

55227421537 is a deficient number, since it is larger than the sum of its proper divisors (1781529759).

55227421537 is a wasteful number, since it uses less digits than its factorization.

55227421537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781529758.

The product of its digits is 588000, while the sum is 43.

The spelling of 55227421537 in words is "fifty-five billion, two hundred twenty-seven million, four hundred twenty-one thousand, five hundred thirty-seven".