55091737 has 2 divisors, whose sum is σ = 55091738. Its totient is φ = 55091736.

The previous prime is 55091689. The next prime is 55091753. The reversal of 55091737 is 73719055.

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., 55041561 + 50176 = 7419^2 + 224^2 .

It is a cyclic number.

It is not a de Polignac number, because 55091737 - 2⁷ = 55091609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55091696 and 55091705.

It is not a weakly prime, because it can be changed into another prime (55091767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27545868 + 27545869.

It is an arithmetic number, because the mean of its divisors is an integer number (27545869).

Almost surely, 2^55091737 is an apocalyptic number.

It is an amenable number.

55091737 is a deficient number, since it is larger than the sum of its proper divisors (1).

55091737 is an equidigital number, since it uses as much as digits as its factorization.

55091737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 55091737 is about 7422.3808175005. The cubic root of 55091737 is about 380.5065658720.

The spelling of 55091737 in words is "fifty-five million, ninety-one thousand, seven hundred thirty-seven".