1550726 has 4 divisors (see below), whose sum is σ = 2326092. Its totient is φ = 775362.

The previous prime is 1550701. The next prime is 1550737. The reversal of 1550726 is 6270551.

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

It is a super-2 number, since 2×1550726² = 4809502254152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1550695 and 1550704.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 387680 + ... + 387683.

It is an arithmetic number, because the mean of its divisors is an integer number (581523).

2^1550726 is an apocalyptic number.

1550726 is a deficient number, since it is larger than the sum of its proper divisors (775366).

1550726 is an equidigital number, since it uses as much as digits as its factorization.

1550726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775365.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 1550726 is about 1245.2814942815. The cubic root of 1550726 is about 115.7475186334.

The spelling of 1550726 in words is "one million, five hundred fifty thousand, seven hundred twenty-six".