91005454 has 16 divisors (see below), whose sum is σ = 145823328. Its totient is φ = 42445312.

The previous prime is 91005443. The next prime is 91005461. The reversal of 91005454 is 45450019.

It is a super-2 number, since 2×91005454² = 16563985315492232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8002 + ... + 15685.

It is an arithmetic number, because the mean of its divisors is an integer number (9113958).

Almost surely, 2^91005454 is an apocalyptic number.

91005454 is a deficient number, since it is larger than the sum of its proper divisors (54817874).

91005454 is a wasteful number, since it uses less digits than its factorization.

91005454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23819.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 91005454 is about 9539.6778771613. The cubic root of 91005454 is about 449.8031303453.

The spelling of 91005454 in words is "ninety-one million, five thousand, four hundred fifty-four".