97011553 has 2 divisors, whose sum is σ = 97011554. Its totient is φ = 97011552.

The previous prime is 97011491. The next prime is 97011581. The reversal of 97011553 is 35511079.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56205009 + 40806544 = 7497^2 + 6388^2 .

It is a cyclic number.

It is not a de Polignac number, because 97011553 - 2¹⁷ = 96880481 is a prime.

It is a super-2 number, since 2×97011553² = 18822482830943618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97014553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48505776 + 48505777.

It is an arithmetic number, because the mean of its divisors is an integer number (48505777).

Almost surely, 2^97011553 is an apocalyptic number.

It is an amenable number.

97011553 is a deficient number, since it is larger than the sum of its proper divisors (1).

97011553 is an equidigital number, since it uses as much as digits as its factorization.

97011553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 97011553 is about 9849.4442990455. Note that the first 3 decimals coincide. The cubic root of 97011553 is about 459.4883299328.

The spelling of 97011553 in words is "ninety-seven million, eleven thousand, five hundred fifty-three".