45561431 has 2 divisors, whose sum is σ = 45561432. Its totient is φ = 45561430.

The previous prime is 45561421. The next prime is 45561437. The reversal of 45561431 is 13416554.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45561431 - 2¹⁰ = 45560407 is a prime.

It is a super-2 number, since 2×45561431² = 4151687989535522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45561394 and 45561403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45561437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22780715 + 22780716.

It is an arithmetic number, because the mean of its divisors is an integer number (22780716).

Almost surely, 2^45561431 is an apocalyptic number.

45561431 is a deficient number, since it is larger than the sum of its proper divisors (1).

45561431 is an equidigital number, since it uses as much as digits as its factorization.

45561431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 45561431 is about 6749.9208143503. The cubic root of 45561431 is about 357.1624433677.

Adding to 45561431 its reverse (13416554), we get a palindrome (58977985).

The spelling of 45561431 in words is "forty-five million, five hundred sixty-one thousand, four hundred thirty-one".