45018750 has 120 divisors (see below), whose sum is σ = 131288472. Its totient is φ = 10290000.

The previous prime is 45018731. The next prime is 45018769. The reversal of 45018750 is 5781054.

It is an interprime number because it is at equal distance from previous prime (45018731) and next prime (45018769).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 6431247 + ... + 6431253.

Almost surely, 2^45018750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45018750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65644236).

45018750 is an abundant number, since it is smaller than the sum of its proper divisors (86269722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45018750 is an frugal number, since it uses more digits than its factorization.

45018750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 45018750 is about 6709.6013294383. The cubic root of 45018750 is about 355.7387248852.

Multiplying 45018750 by its sum of digits (30), we get a square (1350562500 = 36750²).

45018750 divided by its sum of digits (30) gives a 4-th power (1500625 = 35⁴).

Subtracting from 45018750 its reverse (5781054), we obtain a square (39237696 = 6264²).

The spelling of 45018750 in words is "forty-five million, eighteen thousand, seven hundred fifty".