655151953 has 4 divisors (see below), whose sum is σ = 661638708. Its totient is φ = 648665200.

The previous prime is 655151911. The next prime is 655151969. The reversal of 655151953 is 359151556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 571831569 + 83320384 = 23913^2 + 9128^2 .

It is a cyclic number.

It is not a de Polignac number, because 655151953 - 2¹⁷ = 655020881 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655151153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3243226 + ... + 3243427.

It is an arithmetic number, because the mean of its divisors is an integer number (165409677).

Almost surely, 2^655151953 is an apocalyptic number.

It is an amenable number.

655151953 is a deficient number, since it is larger than the sum of its proper divisors (6486755).

655151953 is a wasteful number, since it uses less digits than its factorization.

655151953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6486754.

The product of its digits is 101250, while the sum is 40.

The square root of 655151953 is about 25595.9362594924. The cubic root of 655151953 is about 868.5217124714.

The spelling of 655151953 in words is "six hundred fifty-five million, one hundred fifty-one thousand, nine hundred fifty-three".