1051261157 has 8 divisors (see below), whose sum is σ = 1066987584. Its totient is φ = 1035641088.

The previous prime is 1051261139. The next prime is 1051261163. The reversal of 1051261157 is 7511621501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1051261157 - 2⁸ = 1051260901 is a prime.

It is a super-2 number, since 2×1051261157² = 2210300040433957298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051261117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6563 + ... + 46320.

It is an arithmetic number, because the mean of its divisors is an integer number (133373448).

Almost surely, 2^1051261157 is an apocalyptic number.

It is an amenable number.

1051261157 is a deficient number, since it is larger than the sum of its proper divisors (15726427).

1051261157 is a wasteful number, since it uses less digits than its factorization.

1051261157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53179.

The product of its (nonzero) digits is 2100, while the sum is 29.

The square root of 1051261157 is about 32423.1577271554. The cubic root of 1051261157 is about 1016.8031258680.

Adding to 1051261157 its reverse (7511621501), we get a palindrome (8562882658).

The spelling of 1051261157 in words is "one billion, fifty-one million, two hundred sixty-one thousand, one hundred fifty-seven".