102493091 has 2 divisors, whose sum is σ = 102493092. Its totient is φ = 102493090.

The previous prime is 102493081. The next prime is 102493117. The reversal of 102493091 is 190394201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102493091 is a prime.

It is not a weakly prime, because it can be changed into another prime (102493021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51246545 + 51246546.

It is an arithmetic number, because the mean of its divisors is an integer number (51246546).

Almost surely, 2^102493091 is an apocalyptic number.

102493091 is a deficient number, since it is larger than the sum of its proper divisors (1).

102493091 is an equidigital number, since it uses as much as digits as its factorization.

102493091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 102493091 is about 10123.8871487191. The cubic root of 102493091 is about 467.9845658703.

The spelling of 102493091 in words is "one hundred two million, four hundred ninety-three thousand, ninety-one".