1552661 has 24 divisors (see below), whose sum is σ = 1975104. Its totient is φ = 1203840.

The previous prime is 1552657. The next prime is 1552669. The reversal of 1552661 is 1662551.

It is not a de Polignac number, because 1552661 - 2² = 1552657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1552661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552669) 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 23 ways as a sum of consecutive naturals, for example, 67496 + ... + 67518.

It is an arithmetic number, because the mean of its divisors is an integer number (82296).

2^1552661 is an apocalyptic number.

1552661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1552661 is a deficient number, since it is larger than the sum of its proper divisors (422443).

1552661 is a wasteful number, since it uses less digits than its factorization.

1552661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 70 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 1552661 is about 1246.0581848373. The cubic root of 1552661 is about 115.7956419760.

The spelling of 1552661 in words is "one million, five hundred fifty-two thousand, six hundred sixty-one".