45481261 has 24 divisors (see below), whose sum is σ = 54813024. Its totient is φ = 37608480.

The previous prime is 45481243. The next prime is 45481277. The reversal of 45481261 is 16218454.

It is not a de Polignac number, because 45481261 - 2¹⁵ = 45448493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45481201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215446 + ... + 215656.

It is an arithmetic number, because the mean of its divisors is an integer number (2283876).

Almost surely, 2^45481261 is an apocalyptic number.

It is an amenable number.

45481261 is a deficient number, since it is larger than the sum of its proper divisors (9331763).

45481261 is a wasteful number, since it uses less digits than its factorization.

45481261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 354 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 45481261 is about 6743.9796114757. The cubic root of 45481261 is about 356.9528324202.

The spelling of 45481261 in words is "forty-five million, four hundred eighty-one thousand, two hundred sixty-one".