1405551241 has 2 divisors, whose sum is σ = 1405551242. Its totient is φ = 1405551240.

The previous prime is 1405551233. The next prime is 1405551289. The reversal of 1405551241 is 1421555041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 817731216 + 587820025 = 28596^2 + 24245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405551241 - 2³ = 1405551233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1405551221) by changing a digit.

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 as a sum of consecutive naturals, namely, 702775620 + 702775621.

It is an arithmetic number, because the mean of its divisors is an integer number (702775621).

Almost surely, 2^1405551241 is an apocalyptic number.

It is an amenable number.

1405551241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405551241 is an equidigital number, since it uses as much as digits as its factorization.

1405551241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1405551241 is about 37490.6820556788. The cubic root of 1405551241 is about 1120.1655901530.

The spelling of 1405551241 in words is "one billion, four hundred five million, five hundred fifty-one thousand, two hundred forty-one".