655257403 has 8 divisors (see below), whose sum is σ = 660239360. Its totient is φ = 650284200.

The previous prime is 655257377. The next prime is 655257431. The reversal of 655257403 is 304752556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 655257403 - 2¹³ = 655249211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655257433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264376 + ... + 266842.

It is an arithmetic number, because the mean of its divisors is an integer number (82529920).

Almost surely, 2^655257403 is an apocalyptic number.

655257403 is a deficient number, since it is larger than the sum of its proper divisors (4981957).

655257403 is a wasteful number, since it uses less digits than its factorization.

655257403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377.

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 655257403 is about 25597.9960739117. The cubic root of 655257403 is about 868.5683076167.

The spelling of 655257403 in words is "six hundred fifty-five million, two hundred fifty-seven thousand, four hundred three".