355242251 has 32 divisors (see below), whose sum is σ = 465171840. Its totient is φ = 263264256.

The previous prime is 355242229. The next prime is 355242271. The reversal of 355242251 is 152242553.

It is a cyclic number.

It is not a de Polignac number, because 355242251 - 2¹⁸ = 354980107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (355242271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428105 + ... + 428933.

It is an arithmetic number, because the mean of its divisors is an integer number (14536620).

Almost surely, 2^355242251 is an apocalyptic number.

355242251 is a deficient number, since it is larger than the sum of its proper divisors (109929589).

355242251 is a wasteful number, since it uses less digits than its factorization.

355242251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143.

The product of its digits is 12000, while the sum is 29.

The square root of 355242251 is about 18847.8712591104. The cubic root of 355242251 is about 708.2309001158.

The spelling of 355242251 in words is "three hundred fifty-five million, two hundred forty-two thousand, two hundred fifty-one".