1264550 has 24 divisors (see below), whose sum is σ = 2688816. Its totient is φ = 433440.

The previous prime is 1264541. The next prime is 1264559. The reversal of 1264550 is 554621.

It is an interprime number because it is at equal distance from previous prime (1264541) and next prime (1264559).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1457 + ... + 2156.

It is an arithmetic number, because the mean of its divisors is an integer number (112034).

2^1264550 is an apocalyptic number.

1264550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1264550 is an abundant number, since it is smaller than the sum of its proper divisors (1424266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264550 is a wasteful number, since it uses less digits than its factorization.

1264550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632 (or 3627 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1264550 is about 1124.5221207251. The cubic root of 1264550 is about 108.1380835516.

It can be divided in two parts, 12645 and 50, that multiplied together give a triangular number (632250 = T₁₁₂₄).

The spelling of 1264550 in words is "one million, two hundred sixty-four thousand, five hundred fifty".