1552400197 has 2 divisors, whose sum is σ = 1552400198. Its totient is φ = 1552400196.

The previous prime is 1552400183. The next prime is 1552400219. The reversal of 1552400197 is 7910042551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 983386881 + 569013316 = 31359^2 + 23854^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552400197 - 2²³ = 1544011589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1552400107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776200098 + 776200099.

It is an arithmetic number, because the mean of its divisors is an integer number (776200099).

Almost surely, 2^1552400197 is an apocalyptic number.

It is an amenable number.

1552400197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552400197 is an equidigital number, since it uses as much as digits as its factorization.

1552400197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1552400197 is about 39400.5101109110. The cubic root of 1552400197 is about 1157.8915815204.

The spelling of 1552400197 in words is "one billion, five hundred fifty-two million, four hundred thousand, one hundred ninety-seven".