55447501 has 4 divisors (see below), whose sum is σ = 55658592. Its totient is φ = 55236412.

The previous prime is 55447471. The next prime is 55447531. The reversal of 55447501 is 10574455.

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 an interprime number because it is at equal distance from previous prime (55447471) and next prime (55447531).

It is a cyclic number.

It is not a de Polignac number, because 55447501 - 2⁷ = 55447373 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55447531) 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, 105151 + ... + 105676.

It is an arithmetic number, because the mean of its divisors is an integer number (13914648).

Almost surely, 2^55447501 is an apocalyptic number.

It is an amenable number.

55447501 is a deficient number, since it is larger than the sum of its proper divisors (211091).

55447501 is a wasteful number, since it uses less digits than its factorization.

55447501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211090.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 55447501 is about 7446.3078770623. The cubic root of 55447501 is about 381.3238704482.

The spelling of 55447501 in words is "fifty-five million, four hundred forty-seven thousand, five hundred one".