45345890 has 8 divisors (see below), whose sum is σ = 81622620. Its totient is φ = 18138352.

The previous prime is 45345889. The next prime is 45345943. The reversal of 45345890 is 9854354.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43309561 + 2036329 = 6581^2 + 1427^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2267285 + ... + 2267304.

Almost surely, 2^45345890 is an apocalyptic number.

45345890 is a deficient number, since it is larger than the sum of its proper divisors (36276730).

45345890 is a wasteful number, since it uses less digits than its factorization.

45345890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4534596.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 45345890 is about 6733.9356991287. The cubic root of 45345890 is about 356.5983341691.

The spelling of 45345890 in words is "forty-five million, three hundred forty-five thousand, eight hundred ninety".