1552400404 has 6 divisors (see below), whose sum is σ = 2716700714. Its totient is φ = 776200200.

The previous prime is 1552400371. The next prime is 1552400417. The reversal of 1552400404 is 4040042551.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 836944900 + 715455504 = 28930^2 + 26748^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194050047 + ... + 194050054.

Almost surely, 2^1552400404 is an apocalyptic number.

It is an amenable number.

1552400404 is a deficient number, since it is larger than the sum of its proper divisors (1164300310).

1552400404 is a wasteful number, since it uses less digits than its factorization.

1552400404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388100105 (or 388100103 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1552400404 is about 39400.5127377805. The cubic root of 1552400404 is about 1157.8916329856.

Adding to 1552400404 its reverse (4040042551), we get a palindrome (5592442955).

It can be divided in two parts, 1552 and 400404, that added together give a square (401956 = 634²).

The spelling of 1552400404 in words is "one billion, five hundred fifty-two million, four hundred thousand, four hundred four".