1400552261 has 2 divisors, whose sum is σ = 1400552262. Its totient is φ = 1400552260.

The previous prime is 1400552243. The next prime is 1400552267. The reversal of 1400552261 is 1622550041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1221153025 + 179399236 = 34945^2 + 13394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400552261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1400552261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400552267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700276130 + 700276131.

It is an arithmetic number, because the mean of its divisors is an integer number (700276131).

Almost surely, 2^1400552261 is an apocalyptic number.

It is an amenable number.

1400552261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400552261 is an equidigital number, since it uses as much as digits as its factorization.

1400552261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1400552261 is about 37423.9530381279. The cubic root of 1400552261 is about 1118.8360199518.

It can be divided in two parts, 14005 and 52261, that added together give a palindrome (66266).

The spelling of 1400552261 in words is "one billion, four hundred million, five hundred fifty-two thousand, two hundred sixty-one".