1555422 has 16 divisors (see below), whose sum is σ = 3393792. Its totient is φ = 471320.

The previous prime is 1555409. The next prime is 1555423. The reversal of 1555422 is 2245551.

It is a happy number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1555392 and 1555401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555423) 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, 11718 + ... + 11849.

It is an arithmetic number, because the mean of its divisors is an integer number (212112).

2^1555422 is an apocalyptic number.

1555422 is an abundant number, since it is smaller than the sum of its proper divisors (1838370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1555422 is a wasteful number, since it uses less digits than its factorization.

1555422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23583.

The product of its digits is 2000, while the sum is 24.

The square root of 1555422 is about 1247.1655864399. The cubic root of 1555422 is about 115.8642387156.

It can be divided in two parts, 15554 and 22, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 1555422 in words is "one million, five hundred fifty-five thousand, four hundred twenty-two".