45438261 has 16 divisors (see below), whose sum is σ = 67081728. Its totient is φ = 27126000.

The previous prime is 45438241. The next prime is 45438269. The reversal of 45438261 is 16283454.

It is not a de Polignac number, because 45438261 - 2¹⁴ = 45421877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45438269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8065 + ... + 12486.

It is an arithmetic number, because the mean of its divisors is an integer number (4192608).

Almost surely, 2^45438261 is an apocalyptic number.

It is an amenable number.

45438261 is a deficient number, since it is larger than the sum of its proper divisors (21643467).

45438261 is a wasteful number, since it uses less digits than its factorization.

45438261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20632.

The product of its digits is 23040, while the sum is 33.

The square root of 45438261 is about 6740.7908289755. The cubic root of 45438261 is about 356.8403039400.

The spelling of 45438261 in words is "forty-five million, four hundred thirty-eight thousand, two hundred sixty-one".