1551606 has 16 divisors (see below), whose sum is σ = 3546624. Its totient is φ = 443304.

The previous prime is 1551601. The next prime is 1551617. The reversal of 1551606 is 6061551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551601) 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, 18430 + ... + 18513.

It is an arithmetic number, because the mean of its divisors is an integer number (221664).

2^1551606 is an apocalyptic number.

1551606 is an abundant number, since it is smaller than the sum of its proper divisors (1995018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1551606 is a wasteful number, since it uses less digits than its factorization.

1551606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36955.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1551606 is about 1245.6347779345. The cubic root of 1551606 is about 115.7694091448.

The spelling of 1551606 in words is "one million, five hundred fifty-one thousand, six hundred six".