90551941 has 2 divisors, whose sum is σ = 90551942. Its totient is φ = 90551940.

The previous prime is 90551927. The next prime is 90551957. The reversal of 90551941 is 14915509.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86099841 + 4452100 = 9279^2 + 2110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90551941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90551897 and 90551906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90551971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45275970 + 45275971.

It is an arithmetic number, because the mean of its divisors is an integer number (45275971).

Almost surely, 2^90551941 is an apocalyptic number.

It is an amenable number.

90551941 is a deficient number, since it is larger than the sum of its proper divisors (1).

90551941 is an equidigital number, since it uses as much as digits as its factorization.

90551941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 90551941 is about 9515.8783619800. The cubic root of 90551941 is about 449.0547086708.

The spelling of 90551941 in words is "ninety million, five hundred fifty-one thousand, nine hundred forty-one".