69001057 has 2 divisors, whose sum is σ = 69001058. Its totient is φ = 69001056.

The previous prime is 69001043. The next prime is 69001067. The reversal of 69001057 is 75010096.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39450961 + 29550096 = 6281^2 + 5436^2 .

It is a cyclic number.

It is not a de Polignac number, because 69001057 - 2⁷ = 69000929 is a prime.

It is a super-2 number, since 2×69001057² = 9522291734234498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (69001007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34500528 + 34500529.

It is an arithmetic number, because the mean of its divisors is an integer number (34500529).

Almost surely, 2^69001057 is an apocalyptic number.

It is an amenable number.

69001057 is a deficient number, since it is larger than the sum of its proper divisors (1).

69001057 is an equidigital number, since it uses as much as digits as its factorization.

69001057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 69001057 is about 8306.6874865978. The cubic root of 69001057 is about 410.1586873340.

The spelling of 69001057 in words is "sixty-nine million, one thousand, fifty-seven".