45545501 has 2 divisors, whose sum is σ = 45545502. Its totient is φ = 45545500.

The previous prime is 45545473. The next prime is 45545509. The reversal of 45545501 is 10554554.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45091225 + 454276 = 6715^2 + 674^2 .

It is a cyclic number.

It is not a de Polignac number, because 45545501 - 2¹⁴ = 45529117 is a prime.

It is a super-2 number, since 2×45545501² = 4148785322682002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45545509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22772750 + 22772751.

It is an arithmetic number, because the mean of its divisors is an integer number (22772751).

Almost surely, 2^45545501 is an apocalyptic number.

It is an amenable number.

45545501 is a deficient number, since it is larger than the sum of its proper divisors (1).

45545501 is an equidigital number, since it uses as much as digits as its factorization.

45545501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 45545501 is about 6748.7406973449. The cubic root of 45545501 is about 357.1208126812.

The spelling of 45545501 in words is "forty-five million, five hundred forty-five thousand, five hundred one".