1051399541 has 4 divisors (see below), whose sum is σ = 1073769792. Its totient is φ = 1029029292.

The previous prime is 1051399537. The next prime is 1051399543. The reversal of 1051399541 is 1459931501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1051399541 - 2² = 1051399537 is a prime.

It is a super-2 number, since 2×1051399541² = 2210881989630021362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1051399495 and 1051399504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051399543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11185055 + ... + 11185148.

It is an arithmetic number, because the mean of its divisors is an integer number (268442448).

Almost surely, 2^1051399541 is an apocalyptic number.

It is an amenable number.

1051399541 is a deficient number, since it is larger than the sum of its proper divisors (22370251).

1051399541 is an equidigital number, since it uses as much as digits as its factorization.

1051399541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22370250.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 1051399541 is about 32425.2916872000. The cubic root of 1051399541 is about 1016.8477399359.

The spelling of 1051399541 in words is "one billion, fifty-one million, three hundred ninety-nine thousand, five hundred forty-one".