1051721877 has 48 divisors (see below), whose sum is σ = 1534655808. Its totient is φ = 640224000.

The previous prime is 1051721863. The next prime is 1051721887. The reversal of 1051721877 is 7781271501.

It is not a de Polignac number, because 1051721877 - 2¹⁵ = 1051689109 is a prime.

It is a super-2 number, since 2×1051721877² = 2212237813120806258, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051721807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4190002 + ... + 4190252.

It is an arithmetic number, because the mean of its divisors is an integer number (31971996).

Almost surely, 2^1051721877 is an apocalyptic number.

It is an amenable number.

1051721877 is a deficient number, since it is larger than the sum of its proper divisors (482933931).

1051721877 is a wasteful number, since it uses less digits than its factorization.

1051721877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 39.

The square root of 1051721877 is about 32430.2617473248. The cubic root of 1051721877 is about 1016.9516437108.

The spelling of 1051721877 in words is "one billion, fifty-one million, seven hundred twenty-one thousand, eight hundred seventy-seven".