45477998 has 4 divisors (see below), whose sum is σ = 68217000. Its totient is φ = 22738998.

The previous prime is 45477997. The next prime is 45478087. The reversal of 45477998 is 89977454.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45477997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11369498 + ... + 11369501.

It is an arithmetic number, because the mean of its divisors is an integer number (17054250).

Almost surely, 2^45477998 is an apocalyptic number.

45477998 is a deficient number, since it is larger than the sum of its proper divisors (22739002).

45477998 is a wasteful number, since it uses less digits than its factorization.

45477998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22739001.

The product of its digits is 2540160, while the sum is 53.

The square root of 45477998 is about 6743.7376876625. The cubic root of 45477998 is about 356.9442958279.

The spelling of 45477998 in words is "forty-five million, four hundred seventy-seven thousand, nine hundred ninety-eight".