55001481 has 8 divisors (see below), whose sum is σ = 73528320. Its totient is φ = 36571152.

The previous prime is 55001473. The next prime is 55001497. The reversal of 55001481 is 18410055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55001481 - 2³ = 55001473 is a prime.

It is a super-2 number, since 2×55001481² = 6050325824386722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55001431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22786 + ... + 25083.

It is an arithmetic number, because the mean of its divisors is an integer number (9191040).

Almost surely, 2^55001481 is an apocalyptic number.

It is an amenable number.

55001481 is a deficient number, since it is larger than the sum of its proper divisors (18526839).

55001481 is a wasteful number, since it uses less digits than its factorization.

55001481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48255.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 55001481 is about 7416.2983354231. The cubic root of 55001481 is about 380.2986594834.

The spelling of 55001481 in words is "fifty-five million, one thousand, four hundred eighty-one".