397226155052 has 6 divisors (see below), whose sum is σ = 695145771348. Its totient is φ = 198613077524.

The previous prime is 397226155043. The next prime is 397226155057. The reversal of 397226155052 is 250551622793.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 397226154988 and 397226155006.

It is not an unprimeable number, because it can be changed into a prime (397226155057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49653269378 + ... + 49653269385.

It is an arithmetic number, because the mean of its divisors is an integer number (115857628558).

Almost surely, 2^397226155052 is an apocalyptic number.

It is an amenable number.

397226155052 is a deficient number, since it is larger than the sum of its proper divisors (297919616296).

397226155052 is a wasteful number, since it uses less digits than its factorization.

397226155052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99306538767 (or 99306538765 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 397226155052 in words is "three hundred ninety-seven billion, two hundred twenty-six million, one hundred fifty-five thousand, fifty-two".