1552423401 has 20 divisors (see below), whose sum is σ = 2334634500. Its totient is φ = 1027994976.

The previous prime is 1552423381. The next prime is 1552423417. The reversal of 1552423401 is 1043242551.

1552423401 is a `hidden beast` number, since 15 + 5 + 242 + 3 + 401 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 618815376 + 933608025 = 24876^2 + 30555^2 .

It is not a de Polignac number, because 1552423401 - 2¹⁵ = 1552390633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1552423421) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52246 + ... + 76383.

It is an arithmetic number, because the mean of its divisors is an integer number (116731725).

Almost surely, 2^1552423401 is an apocalyptic number.

It is an amenable number.

1552423401 is a deficient number, since it is larger than the sum of its proper divisors (782211099).

1552423401 is a wasteful number, since it uses less digits than its factorization.

1552423401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128790 (or 128781 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1552423401 is about 39400.8045730033. The cubic root of 1552423401 is about 1157.8973505617.

Adding to 1552423401 its reverse (1043242551), we get a palindrome (2595665952).

The spelling of 1552423401 in words is "one billion, five hundred fifty-two million, four hundred twenty-three thousand, four hundred one".