78153371 has 2 divisors, whose sum is σ = 78153372. Its totient is φ = 78153370.

The previous prime is 78153353. The next prime is 78153373. The reversal of 78153371 is 17335187.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78153371 - 2⁶ = 78153307 is a prime.

It is a super-2 number, since 2×78153371² = 12215898797327282, which contains 22 as substring.

Together with 78153373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78153373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39076685 + 39076686.

It is an arithmetic number, because the mean of its divisors is an integer number (39076686).

Almost surely, 2^78153371 is an apocalyptic number.

78153371 is a deficient number, since it is larger than the sum of its proper divisors (1).

78153371 is an equidigital number, since it uses as much as digits as its factorization.

78153371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 35.

The square root of 78153371 is about 8840.4395252725. The cubic root of 78153371 is about 427.5457283825.

The spelling of 78153371 in words is "seventy-eight million, one hundred fifty-three thousand, three hundred seventy-one".