53780039 has 2 divisors, whose sum is σ = 53780040. Its totient is φ = 53780038.

The previous prime is 53780033. The next prime is 53780059. The reversal of 53780039 is 93008735.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53780039 - 2⁸ = 53779783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53779990 and 53780008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53780033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26890019 + 26890020.

It is an arithmetic number, because the mean of its divisors is an integer number (26890020).

Almost surely, 2^53780039 is an apocalyptic number.

53780039 is a deficient number, since it is larger than the sum of its proper divisors (1).

53780039 is an equidigital number, since it uses as much as digits as its factorization.

53780039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 53780039 is about 7333.4875059551. The cubic root of 53780039 is about 377.4624063845.

The spelling of 53780039 in words is "fifty-three million, seven hundred eighty thousand, thirty-nine".