45672945 has 8 divisors (see below), whose sum is σ = 73076736. Its totient is φ = 24358896.

The previous prime is 45672943. The next prime is 45672989. The reversal of 45672945 is 54927654.

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

It is not a de Polignac number, because 45672945 - 2¹ = 45672943 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 45672897 and 45672906.

It is not an unprimeable number, because it can be changed into a prime (45672943) 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, 1522417 + ... + 1522446.

It is an arithmetic number, because the mean of its divisors is an integer number (9134592).

Almost surely, 2^45672945 is an apocalyptic number.

It is an amenable number.

45672945 is a deficient number, since it is larger than the sum of its proper divisors (27403791).

45672945 is a wasteful number, since it uses less digits than its factorization.

45672945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044871.

The product of its digits is 302400, while the sum is 42.

The square root of 45672945 is about 6758.1761592903. The cubic root of 45672945 is about 357.4535972505.

Subtracting from 45672945 its sum of digits (42), we obtain a triangular number (45672903 = T₉₅₅₇).

The spelling of 45672945 in words is "forty-five million, six hundred seventy-two thousand, nine hundred forty-five".