45140477 has 4 divisors (see below), whose sum is σ = 45220380. Its totient is φ = 45060576.

The previous prime is 45140461. The next prime is 45140489. The reversal of 45140477 is 77404154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13623481 + 31516996 = 3691^2 + 5614^2 .

It is a cyclic number.

It is not a de Polignac number, because 45140477 - 2⁴ = 45140461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45140437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39098 + ... + 40235.

It is an arithmetic number, because the mean of its divisors is an integer number (11305095).

Almost surely, 2^45140477 is an apocalyptic number.

It is an amenable number.

45140477 is a deficient number, since it is larger than the sum of its proper divisors (79903).

45140477 is an equidigital number, since it uses as much as digits as its factorization.

45140477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79902.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 45140477 is about 6718.6663111067. Note that the first 3 decimals coincide. The cubic root of 45140477 is about 356.0590657582.

The spelling of 45140477 in words is "forty-five million, one hundred forty thousand, four hundred seventy-seven".