1552400405 has 16 divisors (see below), whose sum is σ = 1924046784. Its totient is φ = 1201683840.

The previous prime is 1552400371. The next prime is 1552400417. The reversal of 1552400405 is 5040042551.

It is not a de Polignac number, because 1552400405 - 2¹⁴ = 1552384021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10736 + ... + 56745.

It is an arithmetic number, because the mean of its divisors is an integer number (120252924).

Almost surely, 2^1552400405 is an apocalyptic number.

It is an amenable number.

1552400405 is a deficient number, since it is larger than the sum of its proper divisors (371646379).

1552400405 is a wasteful number, since it uses less digits than its factorization.

1552400405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67636.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 1552400405 is about 39400.5127504706. The cubic root of 1552400405 is about 1157.8916332342.

Adding to 1552400405 its reverse (5040042551), we get a palindrome (6592442956).

The spelling of 1552400405 in words is "one billion, five hundred fifty-two million, four hundred thousand, four hundred five".