1053121707 has 24 divisors (see below), whose sum is σ = 1672152768. Its totient is φ = 633375600.

The previous prime is 1053121697. The next prime is 1053121709. The reversal of 1053121707 is 7071213501.

It is a happy number.

It is not a de Polignac number, because 1053121707 - 2⁸ = 1053121451 is a prime.

It is a super-2 number, since 2×1053121707² = 2218130659509187698, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1053121709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27633 + ... + 53570.

It is an arithmetic number, because the mean of its divisors is an integer number (69673032).

Almost surely, 2^1053121707 is an apocalyptic number.

1053121707 is a deficient number, since it is larger than the sum of its proper divisors (619031061).

1053121707 is a wasteful number, since it uses less digits than its factorization.

1053121707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81351 (or 81348 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 1053121707 is about 32451.8367276800. The cubic root of 1053121707 is about 1017.4026274219.

It can be divided in two parts, 1053 and 121707, that added together give a triangular number (122760 = T₄₉₅).

The spelling of 1053121707 in words is "one billion, fifty-three million, one hundred twenty-one thousand, seven hundred seven".