1550541 has 4 divisors (see below), whose sum is σ = 2067392. Its totient is φ = 1033692.

The previous prime is 1550539. The next prime is 1550551. The reversal of 1550541 is 1450551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1550541 - 2¹ = 1550539 is a prime.

It is a D-number.

It is a Duffinian number.

1550541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258421 + ... + 258426.

It is an arithmetic number, because the mean of its divisors is an integer number (516848).

2^1550541 is an apocalyptic number.

It is an amenable number.

1550541 is a deficient number, since it is larger than the sum of its proper divisors (516851).

1550541 is an equidigital number, since it uses as much as digits as its factorization.

1550541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516850.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1550541 is about 1245.2072116720. The cubic root of 1550541 is about 115.7429155975.

The spelling of 1550541 in words is "one million, five hundred fifty thousand, five hundred forty-one".