45481554 has 64 divisors (see below), whose sum is σ = 107721600. Its totient is φ = 14183424.

The previous prime is 45481549. The next prime is 45481559. The reversal of 45481554 is 45518454.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45481549) and next prime (45481559).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45481559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99294 + ... + 99750.

It is an arithmetic number, because the mean of its divisors is an integer number (1683150).

Almost surely, 2^45481554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45481554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53860800).

45481554 is an abundant number, since it is smaller than the sum of its proper divisors (62240046).

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

45481554 is a wasteful number, since it uses less digits than its factorization.

45481554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 578 counting only the distinct ones).

The product of its digits is 64000, while the sum is 36.

The square root of 45481554 is about 6744.0013345194. The cubic root of 45481554 is about 356.9535989407.

The spelling of 45481554 in words is "forty-five million, four hundred eighty-one thousand, five hundred fifty-four".