351261 has 12 divisors (see below), whose sum is σ = 524160. Its totient is φ = 226440.

The previous prime is 351259. The next prime is 351269. The reversal of 351261 is 162153.

It is not a de Polignac number, because 351261 - 2¹ = 351259 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351 + ... + 908.

It is an arithmetic number, because the mean of its divisors is an integer number (43680).

2³⁵¹²⁶¹ is an apocalyptic number.

351261 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

351261 is a deficient number, since it is larger than the sum of its proper divisors (172899).

351261 is a wasteful number, since it uses less digits than its factorization.

351261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296 (or 1293 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 351261 is about 592.6727596237. The cubic root of 351261 is about 70.5575205833.

It can be divided in two parts, 35 and 1261, that added together give a 4-th power (1296 = 6⁴).

The spelling of 351261 in words is "three hundred fifty-one thousand, two hundred sixty-one".