1251956 has 6 divisors (see below), whose sum is σ = 2190930. Its totient is φ = 625976.

The previous prime is 1251953. The next prime is 1251961. The reversal of 1251956 is 6591521.

1251956 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in only one way, i.e., 1136356 + 115600 = 1066^2 + 340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156491 + ... + 156498.

It is an arithmetic number, because the mean of its divisors is an integer number (365155).

2^1251956 is an apocalyptic number.

It is an amenable number.

1251956 is a deficient number, since it is larger than the sum of its proper divisors (938974).

1251956 is a wasteful number, since it uses less digits than its factorization.

1251956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312993 (or 312991 counting only the distinct ones).

The product of its digits is 2700, while the sum is 29.

The square root of 1251956 is about 1118.9083966081. The cubic root of 1251956 is about 107.7778928763. Note that the first 3 decimals are identical.

The spelling of 1251956 in words is "one million, two hundred fifty-one thousand, nine hundred fifty-six".