45542401 has 4 divisors (see below), whose sum is σ = 45707092. Its totient is φ = 45377712.

The previous prime is 45542359. The next prime is 45542429. The reversal of 45542401 is 10424554.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26532801 + 19009600 = 5151^2 + 4360^2 .

It is a cyclic number.

It is not a de Polignac number, because 45542401 - 2⁹ = 45541889 is a prime.

It is a super-2 number, since 2×45542401² = 4148220577689602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45542501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81930 + ... + 82483.

It is an arithmetic number, because the mean of its divisors is an integer number (11426773).

Almost surely, 2^45542401 is an apocalyptic number.

It is an amenable number.

45542401 is a deficient number, since it is larger than the sum of its proper divisors (164691).

45542401 is a wasteful number, since it uses less digits than its factorization.

45542401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164690.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 45542401 is about 6748.5110209586. The cubic root of 45542401 is about 357.1127101639.

Adding to 45542401 its reverse (10424554), we get a palindrome (55966955).

The spelling of 45542401 in words is "forty-five million, five hundred forty-two thousand, four hundred one".