55140037 has 2 divisors, whose sum is σ = 55140038. Its totient is φ = 55140036.

The previous prime is 55140031. The next prime is 55140047. The reversal of 55140037 is 73004155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32615521 + 22524516 = 5711^2 + 4746^2 .

It is a cyclic number.

It is not a de Polignac number, because 55140037 - 2²³ = 46751429 is a prime.

It is a super-2 number, since 2×55140037² = 6080847360722738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55139993 and 55140020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55140031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27570018 + 27570019.

It is an arithmetic number, because the mean of its divisors is an integer number (27570019).

Almost surely, 2^55140037 is an apocalyptic number.

It is an amenable number.

55140037 is a deficient number, since it is larger than the sum of its proper divisors (1).

55140037 is an equidigital number, since it uses as much as digits as its factorization.

55140037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 55140037 is about 7425.6337776650. The cubic root of 55140037 is about 380.6177325662.

The spelling of 55140037 in words is "fifty-five million, one hundred forty thousand, thirty-seven".