997351755 has 16 divisors (see below), whose sum is σ = 1596322080. Its totient is φ = 531734528.

The previous prime is 997351741. The next prime is 997351757. The reversal of 997351755 is 557153799.

It is a cyclic number.

It is not a de Polignac number, because 997351755 - 2⁴ = 997351739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997351698 and 997351707.

It is not an unprimeable number, because it can be changed into a prime (997351757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39949 + ... + 59921.

It is an arithmetic number, because the mean of its divisors is an integer number (99770130).

Almost surely, 2^997351755 is an apocalyptic number.

997351755 is a deficient number, since it is larger than the sum of its proper divisors (598970325).

997351755 is a wasteful number, since it uses less digits than its factorization.

997351755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23310.

The product of its digits is 1488375, while the sum is 51.

The square root of 997351755 is about 31580.8764127913. The cubic root of 997351755 is about 999.1164712736.

The spelling of 997351755 in words is "nine hundred ninety-seven million, three hundred fifty-one thousand, seven hundred fifty-five".