55527251 has 4 divisors (see below), whose sum is σ = 59798592. Its totient is φ = 51255912.

The previous prime is 55527247. The next prime is 55527299. The reversal of 55527251 is 15272555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55527251 - 2² = 55527247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55557251) 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, 2135651 + ... + 2135676.

It is an arithmetic number, because the mean of its divisors is an integer number (14949648).

Almost surely, 2^55527251 is an apocalyptic number.

55527251 is a deficient number, since it is larger than the sum of its proper divisors (4271341).

55527251 is a wasteful number, since it uses less digits than its factorization.

55527251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271340.

The product of its digits is 17500, while the sum is 32.

The square root of 55527251 is about 7451.6609557870. The cubic root of 55527251 is about 381.5066019206.

The spelling of 55527251 in words is "fifty-five million, five hundred twenty-seven thousand, two hundred fifty-one".