70553531 has 2 divisors, whose sum is σ = 70553532. Its totient is φ = 70553530.

The previous prime is 70553507. The next prime is 70553537. The reversal of 70553531 is 13535507.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70553531 - 2⁶ = 70553467 is a prime.

It is a super-2 number, since 2×70553531² = 9955601473135922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70553494 and 70553503.

It is not a weakly prime, because it can be changed into another prime (70553537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35276765 + 35276766.

It is an arithmetic number, because the mean of its divisors is an integer number (35276766).

Almost surely, 2^70553531 is an apocalyptic number.

70553531 is a deficient number, since it is larger than the sum of its proper divisors (1).

70553531 is an equidigital number, since it uses as much as digits as its factorization.

70553531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7875, while the sum is 29.

The square root of 70553531 is about 8399.6149316501. The cubic root of 70553531 is about 413.2119930127.

The spelling of 70553531 in words is "seventy million, five hundred fifty-three thousand, five hundred thirty-one".