55547451 has 20 divisors (see below), whose sum is σ = 83192824. Its totient is φ = 36936000.

The previous prime is 55547447. The next prime is 55547491. The reversal of 55547451 is 15474555.

It is not a de Polignac number, because 55547451 - 2² = 55547447 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 (55547411) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45651 + ... + 46851.

Almost surely, 2^55547451 is an apocalyptic number.

55547451 is a deficient number, since it is larger than the sum of its proper divisors (27645373).

55547451 is a wasteful number, since it uses less digits than its factorization.

55547451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1775 counting only the distinct ones).

The product of its digits is 70000, while the sum is 36.

The square root of 55547451 is about 7453.0162350554. The cubic root of 55547451 is about 381.5528584818.

The spelling of 55547451 in words is "fifty-five million, five hundred forty-seven thousand, four hundred fifty-one".