90451010 has 16 divisors (see below), whose sum is σ = 175336056. Its totient is φ = 33397248.

The previous prime is 90450991. The next prime is 90451013. The reversal of 90451010 is 1015409.

It can be written as a sum of positive squares in 4 ways, for example, as 30991489 + 59459521 = 5567^2 + 7711^2 .

It is not an unprimeable number, because it can be changed into a prime (90451013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347759 + ... + 348018.

Almost surely, 2^90451010 is an apocalyptic number.

90451010 is a deficient number, since it is larger than the sum of its proper divisors (84885046).

90451010 is a wasteful number, since it uses less digits than its factorization.

90451010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695797.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 90451010 is about 9510.5735894319. The cubic root of 90451010 is about 448.8878048649.

Adding to 90451010 its reverse (1015409), we get a palindrome (91466419).

The spelling of 90451010 in words is "ninety million, four hundred fifty-one thousand, ten".