103620551 has 2 divisors, whose sum is σ = 103620552. Its totient is φ = 103620550.

The previous prime is 103620527. The next prime is 103620553. The reversal of 103620551 is 155026301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 103620551 - 2⁶ = 103620487 is a prime.

It is a super-3 number, since 3×103620551³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 103620553, 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 (103620553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51810275 + 51810276.

It is an arithmetic number, because the mean of its divisors is an integer number (51810276).

Almost surely, 2^103620551 is an apocalyptic number.

103620551 is a deficient number, since it is larger than the sum of its proper divisors (1).

103620551 is an equidigital number, since it uses as much as digits as its factorization.

103620551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 103620551 is about 10179.4180089040. The cubic root of 103620551 is about 469.6943100486.

Adding to 103620551 its reverse (155026301), we get a palindrome (258646852).

The spelling of 103620551 in words is "one hundred three million, six hundred twenty thousand, five hundred fifty-one".