7151540402 has 4 divisors (see below), whose sum is σ = 10727310606. Its totient is φ = 3575770200.

The previous prime is 7151540377. The next prime is 7151540453. The reversal of 7151540402 is 2040451517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2040451517 = 13 ⋅156957809.

It can be written as a sum of positive squares in only one way, i.e., 4602401281 + 2549139121 = 67841^2 + 50489^2 .

It is a super-2 number, since 2×7151540402² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1787885099 + ... + 1787885102.

Almost surely, 2^7151540402 is an apocalyptic number.

7151540402 is a deficient number, since it is larger than the sum of its proper divisors (3575770204).

7151540402 is a wasteful number, since it uses less digits than its factorization.

7151540402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575770203.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 7151540402 is about 84566.7807238753. The cubic root of 7151540402 is about 1926.6368628362.

Adding to 7151540402 its reverse (2040451517), we get a palindrome (9191991919).

The spelling of 7151540402 in words is "seven billion, one hundred fifty-one million, five hundred forty thousand, four hundred two".