1490551 has 4 divisors (see below), whose sum is σ = 1495312. Its totient is φ = 1485792.

The previous prime is 1490527. The next prime is 1490557. The reversal of 1490551 is 1550941.

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

It is a cyclic number.

It is not a de Polignac number, because 1490551 - 2⁹ = 1490039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490557) 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, 1875 + ... + 2548.

It is an arithmetic number, because the mean of its divisors is an integer number (373828).

2^1490551 is an apocalyptic number.

1490551 is a deficient number, since it is larger than the sum of its proper divisors (4761).

1490551 is an equidigital number, since it uses as much as digits as its factorization.

1490551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1490551 is about 1220.8812391056. The cubic root of 1490551 is about 114.2305532166.

The spelling of 1490551 in words is "one million, four hundred ninety thousand, five hundred fifty-one".