654001055 has 4 divisors (see below), whose sum is σ = 784801272. Its totient is φ = 523200840.

The previous prime is 654001043. The next prime is 654001057. The reversal of 654001055 is 550100456.

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

It is not a de Polignac number, because 654001055 - 2⁴ = 654001039 is a prime.

It is a super-2 number, since 2×654001055² = 855434759882226050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654001057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65400101 + ... + 65400110.

It is an arithmetic number, because the mean of its divisors is an integer number (196200318).

Almost surely, 2^654001055 is an apocalyptic number.

654001055 is a deficient number, since it is larger than the sum of its proper divisors (130800217).

654001055 is a wasteful number, since it uses less digits than its factorization.

654001055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130800216.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 654001055 is about 25573.4443319628. Note that the first 3 decimals coincide. The cubic root of 654001055 is about 868.0128403000.

The spelling of 654001055 in words is "six hundred fifty-four million, one thousand, fifty-five".