101250551 has 2 divisors, whose sum is σ = 101250552. Its totient is φ = 101250550.

The previous prime is 101250503. The next prime is 101250553. The reversal of 101250551 is 155052101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101250551 - 2²⁶ = 34141687 is a prime.

Together with 101250553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101250553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50625275 + 50625276.

It is an arithmetic number, because the mean of its divisors is an integer number (50625276).

Almost surely, 2^101250551 is an apocalyptic number.

101250551 is a deficient number, since it is larger than the sum of its proper divisors (1).

101250551 is an equidigital number, since it uses as much as digits as its factorization.

101250551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 101250551 is about 10062.3332781219. Note that the first 3 decimals coincide. The cubic root of 101250551 is about 466.0857213657.

The spelling of 101250551 in words is "one hundred one million, two hundred fifty thousand, five hundred fifty-one".