1552400423 has 16 divisors (see below), whose sum is σ = 1832945664. Its totient is φ = 1286621280.

The previous prime is 1552400417. The next prime is 1552400431. The reversal of 1552400423 is 3240042551.

It is a happy number.

It is not a de Polignac number, because 1552400423 - 2⁶ = 1552400359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1552400392 and 1552400401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552400023) 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, 350861 + ... + 355257.

It is an arithmetic number, because the mean of its divisors is an integer number (114559104).

Almost surely, 2^1552400423 is an apocalyptic number.

1552400423 is a deficient number, since it is larger than the sum of its proper divisors (280545241).

1552400423 is a wasteful number, since it uses less digits than its factorization.

1552400423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6062.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1552400423 is about 39400.5129788941. The cubic root of 1552400423 is about 1157.8916377094.

Adding to 1552400423 its reverse (3240042551), we get a palindrome (4792442974).

The spelling of 1552400423 in words is "one billion, five hundred fifty-two million, four hundred thousand, four hundred twenty-three".