1551423 has 8 divisors (see below), whose sum is σ = 2112768. Its totient is φ = 1012184.

The previous prime is 1551383. The next prime is 1551449. The reversal of 1551423 is 3241551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1551423 - 2⁸ = 1551167 is a prime.

1551423 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1551423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551463) 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, 5361 + ... + 5642.

It is an arithmetic number, because the mean of its divisors is an integer number (264096).

2^1551423 is an apocalyptic number.

1551423 is a deficient number, since it is larger than the sum of its proper divisors (561345).

1551423 is a wasteful number, since it uses less digits than its factorization.

1551423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11053.

The product of its digits is 600, while the sum is 21.

The square root of 1551423 is about 1245.5613192453. The cubic root of 1551423 is about 115.7648575952.

Adding to 1551423 its reverse (3241551), we get a palindrome (4792974).

The spelling of 1551423 in words is "one million, five hundred fifty-one thousand, four hundred twenty-three".