45554490 has 96 divisors (see below), whose sum is σ = 126023040. Its totient is φ = 11392128.

The previous prime is 45554473. The next prime is 45554491. The reversal of 45554490 is 9445554.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45554491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121944 + ... + 122316.

It is an arithmetic number, because the mean of its divisors is an integer number (1312740).

Almost surely, 2^45554490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45554490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63011520).

45554490 is an abundant number, since it is smaller than the sum of its proper divisors (80468550).

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

45554490 is a wasteful number, since it uses less digits than its factorization.

45554490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 45554490 is about 6749.4066405870. The cubic root of 45554490 is about 357.1443052894.

It can be divided in two parts, 4555 and 4490, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 45554490 in words is "forty-five million, five hundred fifty-four thousand, four hundred ninety".