90103457 has 2 divisors, whose sum is σ = 90103458. Its totient is φ = 90103456.

The previous prime is 90103441. The next prime is 90103469. The reversal of 90103457 is 75430109.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88661056 + 1442401 = 9416^2 + 1201^2 .

It is an emirp because it is prime and its reverse (75430109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90103457 - 2⁴ = 90103441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90103477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45051728 + 45051729.

It is an arithmetic number, because the mean of its divisors is an integer number (45051729).

Almost surely, 2^90103457 is an apocalyptic number.

It is an amenable number.

90103457 is a deficient number, since it is larger than the sum of its proper divisors (1).

90103457 is an equidigital number, since it uses as much as digits as its factorization.

90103457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 90103457 is about 9492.2840770807. The cubic root of 90103457 is about 448.3121247121.

The spelling of 90103457 in words is "ninety million, one hundred three thousand, four hundred fifty-seven".