70155091 has 2 divisors, whose sum is σ = 70155092. Its totient is φ = 70155090.

The previous prime is 70155023. The next prime is 70155103. The reversal of 70155091 is 19055107.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70155091 - 2²¹ = 68057939 is a prime.

It is not a weakly prime, because it can be changed into another prime (70155191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35077545 + 35077546.

It is an arithmetic number, because the mean of its divisors is an integer number (35077546).

Almost surely, 2^70155091 is an apocalyptic number.

70155091 is a deficient number, since it is larger than the sum of its proper divisors (1).

70155091 is an equidigital number, since it uses as much as digits as its factorization.

70155091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 70155091 is about 8375.8635972657. The cubic root of 70155091 is about 412.4326741666.

The spelling of 70155091 in words is "seventy million, one hundred fifty-five thousand, ninety-one".