1554949 has 4 divisors (see below), whose sum is σ = 1696320. Its totient is φ = 1413580.

The previous prime is 1554913. The next prime is 1554977. The reversal of 1554949 is 9494551.

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 a cyclic number.

It is not a de Polignac number, because 1554949 - 2⁷ = 1554821 is a prime.

It is a Duffinian number.

1554949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1554989) 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 3 ways as a sum of consecutive naturals, for example, 70669 + ... + 70690.

It is an arithmetic number, because the mean of its divisors is an integer number (424080).

2^1554949 is an apocalyptic number.

It is an amenable number.

1554949 is a deficient number, since it is larger than the sum of its proper divisors (141371).

1554949 is a wasteful number, since it uses less digits than its factorization.

1554949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141370.

The product of its digits is 32400, while the sum is 37.

The square root of 1554949 is about 1246.9759420294. The cubic root of 1554949 is about 115.8524928483.

The spelling of 1554949 in words is "one million, five hundred fifty-four thousand, nine hundred forty-nine".