70501121 has 2 divisors, whose sum is σ = 70501122. Its totient is φ = 70501120.

The previous prime is 70501111. The next prime is 70501127. The reversal of 70501121 is 12110507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65044225 + 5456896 = 8065^2 + 2336^2 .

It is a cyclic number.

It is not a de Polignac number, because 70501121 - 2¹⁰ = 70500097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70501121.

It is not a weakly prime, because it can be changed into another prime (70501127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35250560 + 35250561.

It is an arithmetic number, because the mean of its divisors is an integer number (35250561).

Almost surely, 2^70501121 is an apocalyptic number.

It is an amenable number.

70501121 is a deficient number, since it is larger than the sum of its proper divisors (1).

70501121 is an equidigital number, since it uses as much as digits as its factorization.

70501121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 70501121 is about 8396.4945661865. The cubic root of 70501121 is about 413.1096508389.

Adding to 70501121 its reverse (12110507), we get a palindrome (82611628).

The spelling of 70501121 in words is "seventy million, five hundred one thousand, one hundred twenty-one".