1552640071 has 2 divisors, whose sum is σ = 1552640072. Its totient is φ = 1552640070.

The previous prime is 1552640027. The next prime is 1552640083. The reversal of 1552640071 is 1700462551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1552640071 - 2⁹ = 1552639559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1552640021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776320035 + 776320036.

It is an arithmetic number, because the mean of its divisors is an integer number (776320036).

Almost surely, 2^1552640071 is an apocalyptic number.

1552640071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552640071 is an equidigital number, since it uses as much as digits as its factorization.

1552640071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1552640071 is about 39403.5540402132. The cubic root of 1552640071 is about 1157.9512168690.

The spelling of 1552640071 in words is "one billion, five hundred fifty-two million, six hundred forty thousand, seventy-one".