1055551 has 8 divisors (see below), whose sum is σ = 1219104. Its totient is φ = 895200.

The previous prime is 1055543. The next prime is 1055567. The reversal of 1055551 is 1555501.

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

It is a cyclic number.

It is not a de Polignac number, because 1055551 - 2³ = 1055543 is a prime.

It is a super-2 number, since 2×1055551² = 2228375827202, 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 (1055501) 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, 40 + ... + 1453.

It is an arithmetic number, because the mean of its divisors is an integer number (152388).

2^1055551 is an apocalyptic number.

1055551 is a deficient number, since it is larger than the sum of its proper divisors (163553).

1055551 is a wasteful number, since it uses less digits than its factorization.

1055551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 1055551 is about 1027.4001167997. The cubic root of 1055551 is about 101.8184325954.

The spelling of 1055551 in words is "one million, fifty-five thousand, five hundred fifty-one".