1552997 has 2 divisors, whose sum is σ = 1552998.
Its totient is φ = 1552996.
The previous prime is 1552987. The next prime is 1553009. The reversal of 1552997 is 7992551.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1515361 + 37636 = 1231^2 + 194^2
It is a cyclic number.
It is not a de Polignac number, because 1552997 - 24 = 1552981 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 1552997.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1552987) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776498 + 776499.
It is an arithmetic number, because the mean of its divisors is an integer number (776499).
21552997 is an apocalyptic number.
It is an amenable number.
1552997 is a deficient number, since it is larger than the sum of its proper divisors (1).
1552997 is an equidigital number, since it uses as much as digits as its factorization.
1552997 is an evil number, because the sum of its binary digits is even.
The product of its digits is 28350, while the sum is 38.
The square root of 1552997 is about 1246.1930027086.
The cubic root of 1552997 is about 115.8039942026.
The spelling of 1552997 in words is "one million, five hundred fifty-two thousand, nine hundred ninety-seven".