212507651 has 2 divisors, whose sum is σ = 212507652. Its totient is φ = 212507650.

The previous prime is 212507641. The next prime is 212507657. The reversal of 212507651 is 156705212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212507651 - 2⁶ = 212507587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212507657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106253825 + 106253826.

It is an arithmetic number, because the mean of its divisors is an integer number (106253826).

Almost surely, 2^212507651 is an apocalyptic number.

212507651 is a deficient number, since it is larger than the sum of its proper divisors (1).

212507651 is an equidigital number, since it uses as much as digits as its factorization.

212507651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 212507651 is about 14577.6421618861. The cubic root of 212507651 is about 596.7487577129.

The spelling of 212507651 in words is "two hundred twelve million, five hundred seven thousand, six hundred fifty-one".