55535451 has 4 divisors (see below), whose sum is σ = 74047272. Its totient is φ = 37023632.

The previous prime is 55535371. The next prime is 55535503. The reversal of 55535451 is 15453555.

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 55535451 - 2⁹ = 55534939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55535951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9255906 + ... + 9255911.

It is an arithmetic number, because the mean of its divisors is an integer number (18511818).

Almost surely, 2^55535451 is an apocalyptic number.

55535451 is a deficient number, since it is larger than the sum of its proper divisors (18511821).

55535451 is a wasteful number, since it uses less digits than its factorization.

55535451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18511820.

The product of its digits is 37500, while the sum is 33.

The square root of 55535451 is about 7452.2111483774. The cubic root of 55535451 is about 381.5253806889.

The spelling of 55535451 in words is "fifty-five million, five hundred thirty-five thousand, four hundred fifty-one".