1051271377 has 16 divisors (see below), whose sum is σ = 1172456208. Its totient is φ = 936449280.

The previous prime is 1051271363. The next prime is 1051271383. The reversal of 1051271377 is 7731721501.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1252161 + 1050019216 = 1119^2 + 32404^2 .

It is not a de Polignac number, because 1051271377 - 2¹⁵ = 1051238609 is a prime.

It is a super-2 number, since 2×1051271377² = 2210343016198952258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051271477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29523 + ... + 54535.

It is an arithmetic number, because the mean of its divisors is an integer number (73278513).

Almost surely, 2^1051271377 is an apocalyptic number.

It is an amenable number.

1051271377 is a deficient number, since it is larger than the sum of its proper divisors (121184831).

1051271377 is a wasteful number, since it uses less digits than its factorization.

1051271377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25140.

The product of its (nonzero) digits is 10290, while the sum is 34.

The square root of 1051271377 is about 32423.3153301756. The cubic root of 1051271377 is about 1016.8064208609.

Adding to 1051271377 its reverse (7731721501), we get a palindrome (8782992878).

The spelling of 1051271377 in words is "one billion, fifty-one million, two hundred seventy-one thousand, three hundred seventy-seven".