78356053 has 2 divisors, whose sum is σ = 78356054. Its totient is φ = 78356052.

The previous prime is 78356041. The next prime is 78356059. The reversal of 78356053 is 35065387.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47018449 + 31337604 = 6857^2 + 5598^2 .

It is a cyclic number.

It is not a de Polignac number, because 78356053 - 2¹⁷ = 78224981 is a prime.

It is a super-2 number, since 2×78356053² = 12279342083477618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78356059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39178026 + 39178027.

It is an arithmetic number, because the mean of its divisors is an integer number (39178027).

Almost surely, 2^78356053 is an apocalyptic number.

It is an amenable number.

78356053 is a deficient number, since it is larger than the sum of its proper divisors (1).

78356053 is an equidigital number, since it uses as much as digits as its factorization.

78356053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 78356053 is about 8851.8954467391. The cubic root of 78356053 is about 427.9150066330.

The spelling of 78356053 in words is "seventy-eight million, three hundred fifty-six thousand, fifty-three".