101402551 has 2 divisors, whose sum is σ = 101402552. Its totient is φ = 101402550.

The previous prime is 101402549. The next prime is 101402593. The reversal of 101402551 is 155204101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101402551 - 2¹ = 101402549 is a prime.

Together with 101402549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101402051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50701275 + 50701276.

It is an arithmetic number, because the mean of its divisors is an integer number (50701276).

Almost surely, 2^101402551 is an apocalyptic number.

101402551 is a deficient number, since it is larger than the sum of its proper divisors (1).

101402551 is an equidigital number, since it uses as much as digits as its factorization.

101402551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 101402551 is about 10069.8833657595. The cubic root of 101402551 is about 466.3188381471.

Adding to 101402551 its reverse (155204101), we get a palindrome (256606652).

The spelling of 101402551 in words is "one hundred one million, four hundred two thousand, five hundred fifty-one".