1275977052 has 108 divisors (see below), whose sum is σ = 3765596016. Its totient is φ = 363242880.

The previous prime is 1275977023. The next prime is 1275977089. The reversal of 1275977052 is 2507795721.

1275977052 is a `hidden beast` number, since 1 + 2 + 7 + 597 + 7 + 0 + 52 = 666.

It is a super-2 number, since 2×1275977052² = 3256234874461221408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1275976989 and 1275977007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 550977 + ... + 553287.

Almost surely, 2^1275977052 is an apocalyptic number.

1275977052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275977052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1882798008).

1275977052 is an abundant number, since it is smaller than the sum of its proper divisors (2489618964).

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

1275977052 is a wasteful number, since it uses less digits than its factorization.

1275977052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648 (or 2636 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 45.

The square root of 1275977052 is about 35720.8209872058. The cubic root of 1275977052 is about 1084.6283569341.

The spelling of 1275977052 in words is "one billion, two hundred seventy-five million, nine hundred seventy-seven thousand, fifty-two".