1035661501 has 12 divisors (see below), whose sum is σ = 1213550748. Its totient is φ = 881224512.

The previous prime is 1035661489. The next prime is 1035661511. The reversal of 1035661501 is 1051665301.

It can be written as a sum of positive squares in 2 ways, for example, as 219188025 + 816473476 = 14805^2 + 28574^2 .

It is not a de Polignac number, because 1035661501 - 2⁵ = 1035661469 is a prime.

It is a super-3 number, since 3×1035661501³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1035661501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1035661511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70426 + ... + 83851.

It is an arithmetic number, because the mean of its divisors is an integer number (101129229).

Almost surely, 2^1035661501 is an apocalyptic number.

It is an amenable number.

1035661501 is a deficient number, since it is larger than the sum of its proper divisors (177889247).

1035661501 is a wasteful number, since it uses less digits than its factorization.

1035661501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154428 (or 154421 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 1035661501 is about 32181.6951231597. The cubic root of 1035661501 is about 1011.7485969193.

The spelling of 1035661501 in words is "one billion, thirty-five million, six hundred sixty-one thousand, five hundred one".