2155351497 has 16 divisors (see below), whose sum is σ = 3098164608. Its totient is φ = 1324955520.

The previous prime is 2155351487. The next prime is 2155351519. The reversal of 2155351497 is 7941535512.

It is a happy number.

It is not a de Polignac number, because 2155351497 - 2⁶ = 2155351433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155351487) 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, 8172 + ... + 66162.

It is an arithmetic number, because the mean of its divisors is an integer number (193635288).

Almost surely, 2^2155351497 is an apocalyptic number.

It is an amenable number.

2155351497 is a deficient number, since it is larger than the sum of its proper divisors (942813111).

2155351497 is a wasteful number, since it uses less digits than its factorization.

2155351497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58960.

The product of its digits is 189000, while the sum is 42.

The square root of 2155351497 is about 46425.7632893634. The cubic root of 2155351497 is about 1291.7328428133.

The spelling of 2155351497 in words is "two billion, one hundred fifty-five million, three hundred fifty-one thousand, four hundred ninety-seven".