262401551 has 2 divisors, whose sum is σ = 262401552. Its totient is φ = 262401550.

The previous prime is 262401509. The next prime is 262401553. The reversal of 262401551 is 155104262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 262401551 - 2⁶ = 262401487 is a prime.

Together with 262401553, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 262401551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (262401553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131200775 + 131200776.

It is an arithmetic number, because the mean of its divisors is an integer number (131200776).

Almost surely, 2^262401551 is an apocalyptic number.

262401551 is a deficient number, since it is larger than the sum of its proper divisors (1).

262401551 is an equidigital number, since it uses as much as digits as its factorization.

262401551 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 262401551 is about 16198.8132590014. The cubic root of 262401551 is about 640.2095269367.

The spelling of 262401551 in words is "two hundred sixty-two million, four hundred one thousand, five hundred fifty-one".