1051553731 has 2 divisors, whose sum is σ = 1051553732. Its totient is φ = 1051553730.

The previous prime is 1051553719. The next prime is 1051553791. The reversal of 1051553731 is 1373551501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1051553731 - 2⁷ = 1051553603 is a prime.

It is a super-2 number, since 2×1051553731² = 2211530498360040722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1051553693 and 1051553702.

It is not a weakly prime, because it can be changed into another prime (1051553791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525776865 + 525776866.

It is an arithmetic number, because the mean of its divisors is an integer number (525776866).

Almost surely, 2^1051553731 is an apocalyptic number.

1051553731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051553731 is an equidigital number, since it uses as much as digits as its factorization.

1051553731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7875, while the sum is 31.

The square root of 1051553731 is about 32427.6692193565. The cubic root of 1051553731 is about 1016.8974451410.

It can be divided in two parts, 10515 and 53731, that added together give a palindrome (64246).

The spelling of 1051553731 in words is "one billion, fifty-one million, five hundred fifty-three thousand, seven hundred thirty-one".