1552431407 has 2 divisors, whose sum is σ = 1552431408. Its totient is φ = 1552431406.

The previous prime is 1552431371. The next prime is 1552431409. The reversal of 1552431407 is 7041342551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1552431407 - 2¹⁸ = 1552169263 is a prime.

Together with 1552431409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1552431409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776215703 + 776215704.

It is an arithmetic number, because the mean of its divisors is an integer number (776215704).

Almost surely, 2^1552431407 is an apocalyptic number.

1552431407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552431407 is an equidigital number, since it uses as much as digits as its factorization.

1552431407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 1552431407 is about 39400.9061697824. The cubic root of 1552431407 is about 1157.8993410217.

Adding to 1552431407 its reverse (7041342551), we get a palindrome (8593773958).

The spelling of 1552431407 in words is "one billion, five hundred fifty-two million, four hundred thirty-one thousand, four hundred seven".