1552891 has 8 divisors (see below), whose sum is σ = 1638144. Its totient is φ = 1469160.

The previous prime is 1552879. The next prime is 1552909. The reversal of 1552891 is 1982551.

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 1552891 - 2⁹ = 1552379 is a prime.

It is a super-2 number, since 2×1552891² = 4822940915762, 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 (1552861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2146 + ... + 2776.

It is an arithmetic number, because the mean of its divisors is an integer number (204768).

2^1552891 is an apocalyptic number.

1552891 is a deficient number, since it is larger than the sum of its proper divisors (85253).

1552891 is a wasteful number, since it uses less digits than its factorization.

1552891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761.

The product of its digits is 3600, while the sum is 31.

The square root of 1552891 is about 1246.1504724551. The cubic root of 1552891 is about 115.8013594041.

The spelling of 1552891 in words is "one million, five hundred fifty-two thousand, eight hundred ninety-one".