1551204 has 48 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 505440.

The previous prime is 1551203. The next prime is 1551229. The reversal of 1551204 is 4021551.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1551203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5589 + ... + 5859.

It is an arithmetic number, because the mean of its divisors is an integer number (85680).

2^1551204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2056320).

1551204 is an abundant number, since it is smaller than the sum of its proper divisors (2561436).

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

1551204 is a wasteful number, since it uses less digits than its factorization.

1551204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1551204 is about 1245.4734039714. The cubic root of 1551204 is about 115.7594101883.

Adding to 1551204 its reverse (4021551), we get a palindrome (5572755).

The spelling of 1551204 in words is "one million, five hundred fifty-one thousand, two hundred four".