45542131 has 8 divisors (see below), whose sum is σ = 47151104. Its totient is φ = 43941960.

The previous prime is 45542129. The next prime is 45542137. The reversal of 45542131 is 13124554.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45542131 - 2¹ = 45542129 is a prime.

It is a super-2 number, since 2×45542131² = 4148171392042322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45542096 and 45542105.

It is not an unprimeable number, because it can be changed into a prime (45542137) 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 7 ways as a sum of consecutive naturals, for example, 9376 + ... + 13378.

It is an arithmetic number, because the mean of its divisors is an integer number (5893888).

Almost surely, 2^45542131 is an apocalyptic number.

45542131 is a deficient number, since it is larger than the sum of its proper divisors (1608973).

45542131 is a wasteful number, since it uses less digits than its factorization.

45542131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401.

The product of its digits is 2400, while the sum is 25.

The square root of 45542131 is about 6748.4910165162. The cubic root of 45542131 is about 357.1120044434.

Adding to 45542131 its reverse (13124554), we get a palindrome (58666685).

The spelling of 45542131 in words is "forty-five million, five hundred forty-two thousand, one hundred thirty-one".