1427553 has 6 divisors (see below), whose sum is σ = 2062034. Its totient is φ = 951696.

The previous prime is 1427551. The next prime is 1427561. The reversal of 1427553 is 3557241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1306449 + 121104 = 1143^2 + 348^2 .

It is not a de Polignac number, because 1427553 - 2¹ = 1427551 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1427551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79300 + ... + 79317.

2^1427553 is an apocalyptic number.

It is an amenable number.

1427553 is a deficient number, since it is larger than the sum of its proper divisors (634481).

1427553 is a wasteful number, since it uses less digits than its factorization.

1427553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158623 (or 158620 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 1427553 is about 1194.8024941387. The cubic root of 1427553 is about 112.5980182782.

The spelling of 1427553 in words is "one million, four hundred twenty-seven thousand, five hundred fifty-three".